# Concept derivation guides

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Concept guide



## [The normalized inverse of 17 modulo 43](/en/derivations/derivation-mko-modular-inverse-01/?from=%2Fen%2Fderivations%2F%3Fq%3Dmko-modular-inverse)

The unique inverse residue class of 17 modulo 43 is represented by 38; 17*38=15*43+1.

Modular inverse

derivation-mko-modular-inverse-01





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