MathDB
Putnam 2018 B3

Source:

December 2, 2018
PutnamPutnam 2018

Problem Statement

Find all positive integers n<10100n < 10^{100} for which simultaneously nn divides 2n2^n, n−1n-1 divides 2n−12^n - 1, and n−2n-2 divides 2n−22^n - 2.
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