8191

This number is a prime.

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1 + 2 + 2^2 + 2^3 + ... + 2^12 = 1 + 90 + 90^2 = 8191. [Bateman]

Submitted: 2003-05-22 16:20:21;   Last Modified: 2008-12-17 20:14:05.
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