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
977248849Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
3203213377567393211858.22008-06-11 00:32:51
26409568485710075211961.22015-12-23 16:21:33
History
DateUserTypeResult
2015-12-23ConductorF
Factor: 2640956848571007521 / TF: 1-62