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
977473919Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
2580531146171237.92008-05-30 06:30:48
42223654674679516811961.92015-12-23 16:59:19
History
DateUserTypeResult
2015-12-23ConductorF
Factor: 4222365467467951681 / TF: 1-62