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Question 9158: Every Prime in an Inclusive Bounded Interval

On this page
  1. Original question and givens
  2. Definition and scope
  3. Step-by-step derivation
  4. Reverse checks
  5. Result
  6. This question review and source binding

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← Question derivation index · Original question batch

R0017-09158 · q-20261013-advance-20261018-r04-prime-number-0083

Original question and givens

Use natural-number primality: 0 and 1 are not prime. Trial division must cover all candidates through the square-root bound; an incomplete sample is not a primality certificate. lo=35, hi=55, with lo≤hi and a bounded window. Give (lo, hi, every prime in [lo,hi] in increasing order, count).

  • G001 — Use natural-number primality: 0 and 1 are not prime. Trial division must cover all candidates through the square-root bound; an incomplete sample is not a primality certificate. lo=35, hi=55, with lo≤hi and a bounded window. Give (lo, hi, every prime in [lo,hi] in increasing order, count).

Definition and scope

Use the original question domain, assumptions and cited MKO definitions. This item has second-context mathematical and bilingual review, with the model, answer and every arithmetic step independently recomputed from the original parameters; the source question remains a candidate.

Step-by-step derivation

S001 · implies

Before

natural-number prime protocol;0 and1 are not prime

After

a failed candidate witness alone is not a primality proof

Conditions: none

Naturals include0.Primality retains both n≥2 and a complete factor bound.A failed single factor candidate only invalidates that witness;it does not certify primality.

Step identifiers and dependencies

Rule: prime_complete_evidence_scope · Uses: G001

S002 · implies

Before

phase=interval value35;n=35

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S001

S003 · implies

Before

interval value35 trial divisor2:natural dividend=35;positive divisor=2

After

35=17·2+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S002

S004 · implies

Before

interval value35 trial divisor3:natural dividend=35;positive divisor=3

After

35=11·3+2

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S003

S005 · implies

Before

interval value35 trial divisor4:natural dividend=35;positive divisor=4

After

35=8·4+3

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S004

S006 · implies

Before

interval value35 trial divisor5:natural dividend=35;positive divisor=5

After

35=7·5+0

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S005

S007 · implies

Before

phase=interval value35;tried ascending divisors=[2, 3, 4, 5];sqrt floor=5

After

least factor at least2=5;prime=No

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S006

S008 · implies

Before

phase=interval value36;n=36

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S007

S009 · implies

Before

interval value36 trial divisor2:natural dividend=36;positive divisor=2

After

36=18·2+0

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S008

S010 · implies

Before

phase=interval value36;tried ascending divisors=[2];sqrt floor=6

After

least factor at least2=2;prime=No

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S009

S011 · implies

Before

phase=interval value37;n=37

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S010

S012 · implies

Before

interval value37 trial divisor2:natural dividend=37;positive divisor=2

After

37=18·2+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S011

S013 · implies

Before

interval value37 trial divisor3:natural dividend=37;positive divisor=3

After

37=12·3+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S012

S014 · implies

Before

interval value37 trial divisor4:natural dividend=37;positive divisor=4

After

37=9·4+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S013

S015 · implies

Before

interval value37 trial divisor5:natural dividend=37;positive divisor=5

After

37=7·5+2

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S014

S016 · implies

Before

interval value37 trial divisor6:natural dividend=37;positive divisor=6

After

37=6·6+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S015

S017 · implies

Before

phase=interval value37;tried ascending divisors=[2, 3, 4, 5, 6];sqrt floor=6

After

least factor at least2=37;prime=Yes

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S016

S018 · implies

Before

phase=interval value38;n=38

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S017

S019 · implies

Before

interval value38 trial divisor2:natural dividend=38;positive divisor=2

After

38=19·2+0

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S018

S020 · implies

Before

phase=interval value38;tried ascending divisors=[2];sqrt floor=6

After

least factor at least2=2;prime=No

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S019

S021 · implies

Before

phase=interval value39;n=39

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S020

S022 · implies

Before

interval value39 trial divisor2:natural dividend=39;positive divisor=2

After

39=19·2+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S021

S023 · implies

Before

interval value39 trial divisor3:natural dividend=39;positive divisor=3

After

39=13·3+0

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S022

S024 · implies

Before

phase=interval value39;tried ascending divisors=[2, 3];sqrt floor=6

After

least factor at least2=3;prime=No

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S023

S025 · implies

Before

phase=interval value40;n=40

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S024

S026 · implies

Before

interval value40 trial divisor2:natural dividend=40;positive divisor=2

After

40=20·2+0

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S025

S027 · implies

Before

phase=interval value40;tried ascending divisors=[2];sqrt floor=6

After

least factor at least2=2;prime=No

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S026

S028 · implies

Before

phase=interval value41;n=41

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S027

S029 · implies

Before

interval value41 trial divisor2:natural dividend=41;positive divisor=2

After

41=20·2+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S028

S030 · implies

Before

interval value41 trial divisor3:natural dividend=41;positive divisor=3

After

41=13·3+2

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S029

S031 · implies

Before

interval value41 trial divisor4:natural dividend=41;positive divisor=4

After

41=10·4+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S030

S032 · implies

Before

interval value41 trial divisor5:natural dividend=41;positive divisor=5

After

41=8·5+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S031

S033 · implies

Before

interval value41 trial divisor6:natural dividend=41;positive divisor=6

After

41=6·6+5

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S032

S034 · implies

Before

phase=interval value41;tried ascending divisors=[2, 3, 4, 5, 6];sqrt floor=6

After

least factor at least2=41;prime=Yes

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S033

S035 · implies

Before

phase=interval value42;n=42

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S034

S036 · implies

Before

interval value42 trial divisor2:natural dividend=42;positive divisor=2

After

42=21·2+0

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S035

S037 · implies

Before

phase=interval value42;tried ascending divisors=[2];sqrt floor=6

After

least factor at least2=2;prime=No

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S036

S038 · implies

Before

phase=interval value43;n=43

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S037

S039 · implies

Before

interval value43 trial divisor2:natural dividend=43;positive divisor=2

After

43=21·2+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S038

S040 · implies

Before

interval value43 trial divisor3:natural dividend=43;positive divisor=3

After

43=14·3+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S039

S041 · implies

Before

interval value43 trial divisor4:natural dividend=43;positive divisor=4

After

43=10·4+3

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S040

S042 · implies

Before

interval value43 trial divisor5:natural dividend=43;positive divisor=5

After

43=8·5+3

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S041

S043 · implies

Before

interval value43 trial divisor6:natural dividend=43;positive divisor=6

After

43=7·6+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S042

S044 · implies

Before

phase=interval value43;tried ascending divisors=[2, 3, 4, 5, 6];sqrt floor=6

After

least factor at least2=43;prime=Yes

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S043

S045 · implies

Before

phase=interval value44;n=44

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S044

S046 · implies

Before

interval value44 trial divisor2:natural dividend=44;positive divisor=2

After

44=22·2+0

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S045

S047 · implies

Before

phase=interval value44;tried ascending divisors=[2];sqrt floor=6

After

least factor at least2=2;prime=No

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S046

S048 · implies

Before

phase=interval value45;n=45

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S047

S049 · implies

Before

interval value45 trial divisor2:natural dividend=45;positive divisor=2

After

45=22·2+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S048

S050 · implies

Before

interval value45 trial divisor3:natural dividend=45;positive divisor=3

After

45=15·3+0

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S049

S051 · implies

Before

phase=interval value45;tried ascending divisors=[2, 3];sqrt floor=6

After

least factor at least2=3;prime=No

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S050

S052 · implies

Before

phase=interval value46;n=46

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S051

S053 · implies

Before

interval value46 trial divisor2:natural dividend=46;positive divisor=2

After

46=23·2+0

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S052

S054 · implies

Before

phase=interval value46;tried ascending divisors=[2];sqrt floor=6

After

least factor at least2=2;prime=No

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S053

S055 · implies

Before

phase=interval value47;n=47

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S054

S056 · implies

Before

interval value47 trial divisor2:natural dividend=47;positive divisor=2

After

47=23·2+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S055

S057 · implies

Before

interval value47 trial divisor3:natural dividend=47;positive divisor=3

After

47=15·3+2

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S056

S058 · implies

Before

interval value47 trial divisor4:natural dividend=47;positive divisor=4

After

47=11·4+3

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S057

S059 · implies

Before

interval value47 trial divisor5:natural dividend=47;positive divisor=5

After

47=9·5+2

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S058

S060 · implies

Before

interval value47 trial divisor6:natural dividend=47;positive divisor=6

After

47=7·6+5

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S059

S061 · implies

Before

phase=interval value47;tried ascending divisors=[2, 3, 4, 5, 6];sqrt floor=6

After

least factor at least2=47;prime=Yes

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S060

S062 · implies

Before

phase=interval value48;n=48

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S061

S063 · implies

Before

interval value48 trial divisor2:natural dividend=48;positive divisor=2

After

48=24·2+0

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S062

S064 · implies

Before

phase=interval value48;tried ascending divisors=[2];sqrt floor=6

After

least factor at least2=2;prime=No

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S063

S065 · implies

Before

phase=interval value49;n=49

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S064

S066 · implies

Before

interval value49 trial divisor2:natural dividend=49;positive divisor=2

After

49=24·2+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S065

S067 · implies

Before

interval value49 trial divisor3:natural dividend=49;positive divisor=3

After

49=16·3+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S066

S068 · implies

Before

interval value49 trial divisor4:natural dividend=49;positive divisor=4

After

49=12·4+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S067

S069 · implies

Before

interval value49 trial divisor5:natural dividend=49;positive divisor=5

After

49=9·5+4

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S068

S070 · implies

Before

interval value49 trial divisor6:natural dividend=49;positive divisor=6

After

49=8·6+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S069

S071 · implies

Before

interval value49 trial divisor7:natural dividend=49;positive divisor=7

After

49=7·7+0

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S070

S072 · implies

Before

phase=interval value49;tried ascending divisors=[2, 3, 4, 5, 6, 7];sqrt floor=7

After

least factor at least2=7;prime=No

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S071

S073 · implies

Before

phase=interval value50;n=50

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S072

S074 · implies

Before

interval value50 trial divisor2:natural dividend=50;positive divisor=2

After

50=25·2+0

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S073

S075 · implies

Before

phase=interval value50;tried ascending divisors=[2];sqrt floor=7

After

least factor at least2=2;prime=No

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S074

S076 · implies

Before

phase=interval value51;n=51

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S075

S077 · implies

Before

interval value51 trial divisor2:natural dividend=51;positive divisor=2

After

51=25·2+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S076

S078 · implies

Before

interval value51 trial divisor3:natural dividend=51;positive divisor=3

After

51=17·3+0

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S077

S079 · implies

Before

phase=interval value51;tried ascending divisors=[2, 3];sqrt floor=7

After

least factor at least2=3;prime=No

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S078

S080 · implies

Before

phase=interval value52;n=52

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S079

S081 · implies

Before

interval value52 trial divisor2:natural dividend=52;positive divisor=2

After

52=26·2+0

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S080

S082 · implies

Before

phase=interval value52;tried ascending divisors=[2];sqrt floor=7

After

least factor at least2=2;prime=No

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S081

S083 · implies

Before

phase=interval value53;n=53

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S082

S084 · implies

Before

interval value53 trial divisor2:natural dividend=53;positive divisor=2

After

53=26·2+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S083

S085 · implies

Before

interval value53 trial divisor3:natural dividend=53;positive divisor=3

After

53=17·3+2

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S084

S086 · implies

Before

interval value53 trial divisor4:natural dividend=53;positive divisor=4

After

53=13·4+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S085

S087 · implies

Before

interval value53 trial divisor5:natural dividend=53;positive divisor=5

After

53=10·5+3

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S086

S088 · implies

Before

interval value53 trial divisor6:natural dividend=53;positive divisor=6

After

53=8·6+5

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S087

S089 · implies

Before

interval value53 trial divisor7:natural dividend=53;positive divisor=7

After

53=7·7+4

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S088

S090 · implies

Before

phase=interval value53;tried ascending divisors=[2, 3, 4, 5, 6, 7];sqrt floor=7

After

least factor at least2=53;prime=Yes

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S089

S091 · implies

Before

phase=interval value54;n=54

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S090

S092 · implies

Before

interval value54 trial divisor2:natural dividend=54;positive divisor=2

After

54=27·2+0

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S091

S093 · implies

Before

phase=interval value54;tried ascending divisors=[2];sqrt floor=7

After

least factor at least2=2;prime=No

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S092

S094 · implies

Before

phase=interval value55;n=55

After

n>=2=Yes

Conditions: none

A prime must be at least2.Exclude0 and1 first rather than treating an absence of trial factors as primality.

Step identifiers and dependencies

Rule: prime_lower_bound_guard · Uses: G001, S093

S095 · implies

Before

interval value55 trial divisor2:natural dividend=55;positive divisor=2

After

55=27·2+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S094

S096 · implies

Before

interval value55 trial divisor3:natural dividend=55;positive divisor=3

After

55=18·3+1

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S095

S097 · implies

Before

interval value55 trial divisor4:natural dividend=55;positive divisor=4

After

55=13·4+3

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S096

S098 · implies

Before

interval value55 trial divisor5:natural dividend=55;positive divisor=5

After

55=11·5+0

Conditions: none

With a positive divisor show the complete quotient/remainder equality and0≤r<divisor.Modulo zero is not evaluated.

Step identifiers and dependencies

Rule: positive_euclidean_division · Uses: G001, S097

S099 · implies

Before

phase=interval value55;tried ascending divisors=[2, 3, 4, 5];sqrt floor=7

After

least factor at least2=5;prime=No

Conditions: none

If n=uv is composite with u,v≥2,one factor is≤sqrt(n).The first zero remainder in ascending order gives the least factor;if none exists through the full bound,n itself is the least factor≥2 and is prime.

Step identifiers and dependencies

Rule: complete_small_factor_bound · Uses: G001, S098

S100 · implies

Before

inclusive interval=[35, 55]

After

all primes=[37, 41, 43, 47, 53];count=5

Conditions: none

Check both interval endpoints and retain exactly those values passing the complete primality test.This finite enumeration makes no distribution claim outside the interval.

Step identifiers and dependencies

Rule: complete_inclusive_prime_interval · Uses: G001, S099

Reverse checks

  • S100 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S099 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S098 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S097 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S096 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S095 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S094 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S093 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S092 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S091 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S090 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S089 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S088 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S087 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S086 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S085 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S084 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S083 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S082 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S081 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S080 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S079 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S078 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S077 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S076 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S075 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S074 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S073 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S072 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S071 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S070 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S069 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S068 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S067 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S066 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S065 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S064 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S063 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S062 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S061 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S060 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S059 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S058 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S057 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S056 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S055 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S054 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S053 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S052 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S051 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S050 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S049 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S048 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S047 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S046 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S045 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S044 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S043 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S042 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S041 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S040 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S039 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S038 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S037 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S036 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S035 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S034 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S033 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S032 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S031 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S030 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S029 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S028 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S027 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S026 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S025 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S024 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S023 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S022 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S021 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S020 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S019 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S018 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S017 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S016 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S015 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S014 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S013 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S012 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S011 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S010 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S009 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S008 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S007 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S006 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S005 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S004 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S003 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S002 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S001 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.

Result

(35, 55, [37, 41, 43, 47, 53], 5)

The full substitutions and premise checks give the original answer; source identity,format and status are unchanged.

This question review and source binding

Review date: 2026-10-26

Original questions, answers, step expressions, numeric ASTs and historical records are retained. Source candidate labels remain historical and are not overwritten as formal proof.

Source hashes and review receipts
  • input commit: 0f7be61e2c22317a4075561dc822c87d881a50db
  • original question SHA-256: 4ce6a0618fddbcd5d89e825a13a014ee0b91fd049db65f7308b0167aca1858bb
  • candidate record SHA-256: ed8a91f0852183e59b6ab8c4fe48bca6dde8fd0c6470724bb33c9d756afdec80
  • semantic review receipt SHA-256: abad28564830bb9b6ef069ca5a1aa128ce7b1a67a5cb8fe6d868a06db73bcfb8
  • question-first witness SHA-256: 43126988479968837abe086263dac1b24c37463ad80e00d2e280a7b8e9036a04
  • Lean: NOT_RUN · human review: NOT_PERFORMED
Same-source full JSON