# Question 31823: Quotient of Consecutive Factorials

[Return to catalogue page 160](https://ocme.evemisslab.com/en/questions/page/160/)

[← Question derivation index](https://ocme.evemisslab.com/en/questions/) · [Original question batch](https://ocme.evemisslab.com/en/practice/batch-20260926-factorial-foundations/#q-20260926-factorial-consecutive-quotient-0023)

This teaching derivation has second-context AI mathematical and bilingual semantic review, limited to the model and assumptions stated in this question. It has no human review or new Lean proof and does not promote the original question or MKO to Canonical truth.

R0062-31823 · q-20260926-factorial-consecutive-quotient-0023



## Original question and givens

Compute 23!/22!; the denominator is explicitly positive.


- G001 — Compute 23!/22!; the denominator is explicitly positive.





## 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.


- [mko-factorial](https://ocme.evemisslab.com/en/mko/mko-factorial/)





## Step-by-step derivation

S001 · impliesBefore

source roles = [qf-factorial-consecutive-quotient, no-domain-field, consecutive_quotient, no-form-field]

After

derived = [[exact_integer_STRING]]

Conditions: none

Check THIS bank interface:BASE equations use form/domain;BASE events/complement have no operation;factorials have no domain.ext18 uses local hyphens,other legacy operations underscores.Do not force every answer into a tuple or fraction.

Step identifiers and dependenciesRule: R62_EXACT_source_keys_domain_operation_form_AND_output_types · Uses: G001





S002 · calculationBefore

Factorial requested n ORIGINAL factorial factor2 := mul(1, 2)

After

Factorial requested n ORIGINAL factorial factor2 = 2

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S001





S003 · calculationBefore

Factorial requested n ORIGINAL factorial factor3 := mul(2, 3)

After

Factorial requested n ORIGINAL factorial factor3 = 6

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S002





S004 · calculationBefore

Factorial requested n ORIGINAL factorial factor4 := mul(6, 4)

After

Factorial requested n ORIGINAL factorial factor4 = 24

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S003





S005 · calculationBefore

Factorial requested n ORIGINAL factorial factor5 := mul(24, 5)

After

Factorial requested n ORIGINAL factorial factor5 = 120

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S004





S006 · calculationBefore

Factorial requested n ORIGINAL factorial factor6 := mul(120, 6)

After

Factorial requested n ORIGINAL factorial factor6 = 720

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S005





S007 · calculationBefore

Factorial requested n ORIGINAL factorial factor7 := mul(720, 7)

After

Factorial requested n ORIGINAL factorial factor7 = 5040

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S006





S008 · calculationBefore

Factorial requested n ORIGINAL factorial factor8 := mul(5040, 8)

After

Factorial requested n ORIGINAL factorial factor8 = 40320

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S007





S009 · calculationBefore

Factorial requested n ORIGINAL factorial factor9 := mul(40320, 9)

After

Factorial requested n ORIGINAL factorial factor9 = 362880

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S008





S010 · calculationBefore

Factorial requested n ORIGINAL factorial factor10 := mul(362880, 10)

After

Factorial requested n ORIGINAL factorial factor10 = 3628800

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S009





S011 · calculationBefore

Factorial requested n ORIGINAL factorial factor11 := mul(3628800, 11)

After

Factorial requested n ORIGINAL factorial factor11 = 39916800

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S010





S012 · calculationBefore

Factorial requested n ORIGINAL factorial factor12 := mul(39916800, 12)

After

Factorial requested n ORIGINAL factorial factor12 = 479001600

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S011





S013 · calculationBefore

Factorial requested n ORIGINAL factorial factor13 := mul(479001600, 13)

After

Factorial requested n ORIGINAL factorial factor13 = 6227020800

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S012





S014 · calculationBefore

Factorial requested n ORIGINAL factorial factor14 := mul(6227020800, 14)

After

Factorial requested n ORIGINAL factorial factor14 = 87178291200

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S013





S015 · calculationBefore

Factorial requested n ORIGINAL factorial factor15 := mul(87178291200, 15)

After

Factorial requested n ORIGINAL factorial factor15 = 1307674368000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S014





S016 · calculationBefore

Factorial requested n ORIGINAL factorial factor16 := mul(1307674368000, 16)

After

Factorial requested n ORIGINAL factorial factor16 = 20922789888000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S015





S017 · calculationBefore

Factorial requested n ORIGINAL factorial factor17 := mul(20922789888000, 17)

After

Factorial requested n ORIGINAL factorial factor17 = 355687428096000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S016





S018 · calculationBefore

Factorial requested n ORIGINAL factorial factor18 := mul(355687428096000, 18)

After

Factorial requested n ORIGINAL factorial factor18 = 6402373705728000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S017





S019 · calculationBefore

Factorial requested n ORIGINAL factorial factor19 := mul(6402373705728000, 19)

After

Factorial requested n ORIGINAL factorial factor19 = 121645100408832000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S018





S020 · calculationBefore

Factorial requested n ORIGINAL factorial factor20 := mul(121645100408832000, 20)

After

Factorial requested n ORIGINAL factorial factor20 = 2432902008176640000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S019





S021 · calculationBefore

Factorial requested n ORIGINAL factorial factor21 := mul(2432902008176640000, 21)

After

Factorial requested n ORIGINAL factorial factor21 = 51090942171709440000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S020





S022 · calculationBefore

Factorial requested n ORIGINAL factorial factor22 := mul(51090942171709440000, 22)

After

Factorial requested n ORIGINAL factorial factor22 = 1124000727777607680000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S021





S023 · calculationBefore

Factorial requested n ORIGINAL factorial factor23 := mul(1124000727777607680000, 23)

After

Factorial requested n ORIGINAL factorial factor23 = 25852016738884976640000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S022





S024 · impliesBefore

source roles = [Factorial requested n, 23]

After

derived = [25852016738884976640000]

Conditions: none

Factorial multiplies the COMPLETE2..n factors;at n0/1 the empty product is1.Use arbitrary-precision integers,not Number/scientific notation or another family n64 cap.

Step identifiers and dependenciesRule: Factorial_COMPLETE_product_EMPTY0and1_are1_not_input_n64_cap · Uses: G001, S023





S025 · impliesBefore

source roles = [23, 25852016738884976640000]

After

derived = [25852016738884976640000]

Conditions: none

Recompute the WHOLE n! and compare the GIVEN decimal STRING first;do not treat an unchecked hint as an answer oracle.Require the exact string,retaining every digit.

Step identifiers and dependenciesRule: Factorial_GIVEN_nfactorial_STRING_verified_not_assumed · Uses: G001, S024





S026 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor2 := mul(1, 2)

After

Factorial previous n minus1 ORIGINAL factorial factor2 = 2

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S025





S027 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor3 := mul(2, 3)

After

Factorial previous n minus1 ORIGINAL factorial factor3 = 6

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S026





S028 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor4 := mul(6, 4)

After

Factorial previous n minus1 ORIGINAL factorial factor4 = 24

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S027





S029 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor5 := mul(24, 5)

After

Factorial previous n minus1 ORIGINAL factorial factor5 = 120

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S028





S030 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor6 := mul(120, 6)

After

Factorial previous n minus1 ORIGINAL factorial factor6 = 720

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S029





S031 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor7 := mul(720, 7)

After

Factorial previous n minus1 ORIGINAL factorial factor7 = 5040

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S030





S032 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor8 := mul(5040, 8)

After

Factorial previous n minus1 ORIGINAL factorial factor8 = 40320

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S031





S033 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor9 := mul(40320, 9)

After

Factorial previous n minus1 ORIGINAL factorial factor9 = 362880

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S032





S034 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor10 := mul(362880, 10)

After

Factorial previous n minus1 ORIGINAL factorial factor10 = 3628800

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S033





S035 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor11 := mul(3628800, 11)

After

Factorial previous n minus1 ORIGINAL factorial factor11 = 39916800

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S034





S036 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor12 := mul(39916800, 12)

After

Factorial previous n minus1 ORIGINAL factorial factor12 = 479001600

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S035





S037 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor13 := mul(479001600, 13)

After

Factorial previous n minus1 ORIGINAL factorial factor13 = 6227020800

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S036





S038 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor14 := mul(6227020800, 14)

After

Factorial previous n minus1 ORIGINAL factorial factor14 = 87178291200

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S037





S039 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor15 := mul(87178291200, 15)

After

Factorial previous n minus1 ORIGINAL factorial factor15 = 1307674368000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S038





S040 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor16 := mul(1307674368000, 16)

After

Factorial previous n minus1 ORIGINAL factorial factor16 = 20922789888000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S039





S041 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor17 := mul(20922789888000, 17)

After

Factorial previous n minus1 ORIGINAL factorial factor17 = 355687428096000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S040





S042 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor18 := mul(355687428096000, 18)

After

Factorial previous n minus1 ORIGINAL factorial factor18 = 6402373705728000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S041





S043 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor19 := mul(6402373705728000, 19)

After

Factorial previous n minus1 ORIGINAL factorial factor19 = 121645100408832000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S042





S044 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor20 := mul(121645100408832000, 20)

After

Factorial previous n minus1 ORIGINAL factorial factor20 = 2432902008176640000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S043





S045 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor21 := mul(2432902008176640000, 21)

After

Factorial previous n minus1 ORIGINAL factorial factor21 = 51090942171709440000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S044





S046 · calculationBefore

Factorial previous n minus1 ORIGINAL factorial factor22 := mul(51090942171709440000, 22)

After

Factorial previous n minus1 ORIGINAL factorial factor22 = 1124000727777607680000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S045





S047 · impliesBefore

source roles = [Factorial previous n minus1, 22]

After

derived = [1124000727777607680000]

Conditions: none

Factorial multiplies the COMPLETE2..n factors;at n0/1 the empty product is1.Use arbitrary-precision integers,not Number/scientific notation or another family n64 cap.

Step identifiers and dependenciesRule: Factorial_COMPLETE_product_EMPTY0and1_are1_not_input_n64_cap · Uses: G001, S046





S048 · calculationBefore

Factorial ORIGINAL n factorial over positive previous factorial := div(25852016738884976640000, 1124000727777607680000)

After

Factorial ORIGINAL n factorial over positive previous factorial = 23

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S047





S049 · calculationBefore

Factorial quotient reverse ORIGINAL previous factorial times n := mul(1124000727777607680000, 23)

After

Factorial quotient reverse ORIGINAL previous factorial times n = 25852016738884976640000

Conditions: none

Use ORIGINAL operands and declared order for exact integer/rational arithmetic,not floats.Bounds are family-specific:do not revalidate derived values as RAW inputs or add blanket SAFE/n64 caps to BASE families.

Step identifiers and dependenciesRule: exact_rational_arithmetic · Uses: G001, S048





S050 · impliesBefore

source roles = [23, 25852016738884976640000, 1124000727777607680000]

After

derived = [23, 25852016738884976640000]

Conditions: none

Require n≥1,verify BOTH given factorial strings and prove(n−1)!>0 BEFORE cancellation.From n!=n(n−1)! obtain n,not a guessed divisor from answer appearance.

Step identifiers and dependenciesRule: Factorial_QUOTIENT_BOTH_given_strings_positive_den_before_cancel · Uses: G001, S049









## Reverse checks


- S050 · premise_and_result_audit — Reverse-check the ORIGINAL inputs,field roles,domain and premises.Consistency does not imply unique recovery of premises.Keep finite checking,independent review,formal proof and publication separate.
- S049 · premise_and_result_audit — Recompute Factorial quotient reverse ORIGINAL previous factorial times n with exact rational arithmetic, not rounded decimals.
- S048 · premise_and_result_audit — Recompute Factorial ORIGINAL n factorial over positive previous factorial with exact rational arithmetic, not rounded decimals.
- S047 · premise_and_result_audit — Reverse-check the ORIGINAL inputs,field roles,domain and premises.Consistency does not imply unique recovery of premises.Keep finite checking,independent review,formal proof and publication separate.
- S046 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor22 with exact rational arithmetic, not rounded decimals.
- S045 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor21 with exact rational arithmetic, not rounded decimals.
- S044 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor20 with exact rational arithmetic, not rounded decimals.
- S043 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor19 with exact rational arithmetic, not rounded decimals.
- S042 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor18 with exact rational arithmetic, not rounded decimals.
- S041 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor17 with exact rational arithmetic, not rounded decimals.
- S040 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor16 with exact rational arithmetic, not rounded decimals.
- S039 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor15 with exact rational arithmetic, not rounded decimals.
- S038 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor14 with exact rational arithmetic, not rounded decimals.
- S037 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor13 with exact rational arithmetic, not rounded decimals.
- S036 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor12 with exact rational arithmetic, not rounded decimals.
- S035 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor11 with exact rational arithmetic, not rounded decimals.
- S034 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor10 with exact rational arithmetic, not rounded decimals.
- S033 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor9 with exact rational arithmetic, not rounded decimals.
- S032 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor8 with exact rational arithmetic, not rounded decimals.
- S031 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor7 with exact rational arithmetic, not rounded decimals.
- S030 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor6 with exact rational arithmetic, not rounded decimals.
- S029 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor5 with exact rational arithmetic, not rounded decimals.
- S028 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor4 with exact rational arithmetic, not rounded decimals.
- S027 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor3 with exact rational arithmetic, not rounded decimals.
- S026 · premise_and_result_audit — Recompute Factorial previous n minus1 ORIGINAL factorial factor2 with exact rational arithmetic, not rounded decimals.
- S025 · premise_and_result_audit — Reverse-check the ORIGINAL inputs,field roles,domain and premises.Consistency does not imply unique recovery of premises.Keep finite checking,independent review,formal proof and publication separate.
- S024 · premise_and_result_audit — Reverse-check the ORIGINAL inputs,field roles,domain and premises.Consistency does not imply unique recovery of premises.Keep finite checking,independent review,formal proof and publication separate.
- S023 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor23 with exact rational arithmetic, not rounded decimals.
- S022 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor22 with exact rational arithmetic, not rounded decimals.
- S021 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor21 with exact rational arithmetic, not rounded decimals.
- S020 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor20 with exact rational arithmetic, not rounded decimals.
- S019 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor19 with exact rational arithmetic, not rounded decimals.
- S018 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor18 with exact rational arithmetic, not rounded decimals.
- S017 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor17 with exact rational arithmetic, not rounded decimals.
- S016 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor16 with exact rational arithmetic, not rounded decimals.
- S015 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor15 with exact rational arithmetic, not rounded decimals.
- S014 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor14 with exact rational arithmetic, not rounded decimals.
- S013 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor13 with exact rational arithmetic, not rounded decimals.
- S012 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor12 with exact rational arithmetic, not rounded decimals.
- S011 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor11 with exact rational arithmetic, not rounded decimals.
- S010 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor10 with exact rational arithmetic, not rounded decimals.
- S009 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor9 with exact rational arithmetic, not rounded decimals.
- S008 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor8 with exact rational arithmetic, not rounded decimals.
- S007 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor7 with exact rational arithmetic, not rounded decimals.
- S006 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor6 with exact rational arithmetic, not rounded decimals.
- S005 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor5 with exact rational arithmetic, not rounded decimals.
- S004 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor4 with exact rational arithmetic, not rounded decimals.
- S003 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor3 with exact rational arithmetic, not rounded decimals.
- S002 · premise_and_result_audit — Recompute Factorial requested n ORIGINAL factorial factor2 with exact rational arithmetic, not rounded decimals.
- S001 · premise_and_result_audit — Reverse-check the ORIGINAL inputs,field roles,domain and premises.Consistency does not imply unique recovery of premises.Keep finite checking,independent review,formal proof and publication separate.





## Result

23

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: bb0d7eea58adc2d17ba0143cf0b079e9c92c092641bbd50195f2286579da6520
- candidate record SHA-256: 31d97889dda7710a254970659959e7eacd75360a574b3beb8ba7727b51e74d7e
- semantic review receipt SHA-256: 963099ffc9f754069fdce6792949a85ed350472465eaceb3038fa8011cf672bd
- question-first witness SHA-256: d7655324c5d11528e1af90b757384cebd3313e19dc5f6f5b9b8ea7624fb06f6f
- Lean: NOT_RUN · human review: NOT_PERFORMED

[Same-source full JSON](https://ocme.evemisslab.com/data/question-derivations/questions/q-20260926-factorial-consecutive-quotient-0023.json)




