MathDB

27

Part of 1970 IMO Longlists

Problems(1)

Natural Divisible by Prime

Source: ILL 1970 - Problem 27.

5/24/2011
Find a n∈Nn\in\mathbb{N} such that for all primes pp, nn is divisible by pp if and only if nn is divisible by p−1p-1.
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