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
977099549Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
312671855691134.92008-06-01 01:24:14
21083449470940750091960.92015-12-23 14:39:08
History
DateUserTypeResult
2025-06-01mikrNF
no factor from 2^68 to 2^71
2015-12-23ConductorF
Factor: 2108344947094075009 / TF: 1-62