Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
319727503Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
648891478156425124972065.82014-01-28 12:18:42
History
DateUserTypeResult
2014-01-28NickF
Factor: 64889147815642512497
2011-11-04tscNF
no factor from 2^64 to 2^65