# Concept derivation guides

299 concept teaching guides, separate from the 36,000 individual question derivations.

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Concept guide



## [Existence, Euclid's lemma and unique factors](/en/derivations/derivation-mko-unique-prime-factorization-01/?from=%2Fen%2Fderivations%2F%3Fq%3Dmko-unique-prime-factorization)

Every positive integer n>1 has a unique prime multiset; 360=2^3*3^2*5, with signs and units separate.

Unique prime factorization of integers

derivation-mko-unique-prime-factorization-01





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