Lehmer's totient problem: Difference between revisions

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'''Lehmer's totient problem''' asks whether the following is true:
'''Lehmer's totient problem''' asks whether the following is true:


{{quotation|For a natural number <math>n</math>, if the [[Euler totient function]] <math>\varphi(n)</math> divides <math>n - 1</math>, then <math>n</math> must be a [[prime number]].}}
{{quotation|For a natural number <math>n</math>, if the [[fact about::Euler totient function]] <math>\varphi(n)</math> divides <math>n - 1</math>, then <math>n</math> must be a [[prime number]].}}

Latest revision as of 17:53, 28 January 2014

Statement

Lehmer's totient problem asks whether the following is true:

For a natural number , if the Euler totient function divides , then must be a prime number.