# 31

This number is a prime.

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The minimal number of moves required in a Tower of Hanoi puzzle containing five discs. The general solution to this puzzle requires a Mersenne number (i.e., 2^n - 1) of moves, where *n*is the number of discs.

Submitted: 1999-09-02 18:40:00; Last Modified: 2009-07-22 19:39:31.

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