Math 2.0

Number theory Congruences Concept

Carmichael number

Summary

A Carmichael number is a composite number nn that satisfies an−1≡1(modn)a^{n-1} \equiv 1 \pmod n for each integer aa coprime to nn. The definition of a Carmichael number gives the precise form.

Further reading

  1. Web https://en.wikipedia.org/wiki/Carmichael_number, lead section
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Kindconcept
WritingW1 stated
MSC11A51
SpecializesFermat pseudoprime
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