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8191 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) The smallest Mersenne prime p such that the Mersenne number M(p) = 2^p - 1 is composite.
Submitted: 2008-01-30 20:01:41; Last Modified: 2009-01-22 20:01:21.
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