5
This number is a prime.
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The smallest prime p such that both 2p + 1 and
2p - 1 (= Mp)
are primes. Note that both 2Mp - 1
and 2Mp - 1 are also
primes. [Beedassy]
Submitted: 2009-08-27 07:27:27; Last Modified: 2009-11-01 14:11:47.
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