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A000043 Primes p such that 2^p - 1 is prime. 2^p - 1 is then called a Mersenne prime.
(Formerly M0672 N0248)
+0
332
2, 3, 5, 7, 13, 17, 19, 31, 61, 89, 107, 127, 521, 607, 1279, 2203, 2281, 3217, 4253, 4423, 9689, 9941, 11213, 19937, 21701, 23209, 44497, 86243, 110503, 132049, 216091, 756839, 859433, 1257787, 1398269, 2976221, 3021377, 6972593, 13466917 (list; graph; listen)
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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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