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
977026549Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
1284438182377371546.92008-05-27 23:20:37
26666289398492146071961.22015-12-22 19:36:19
History
DateUserTypeResult
2025-06-01mikrNF
no factor from 2^68 to 2^71
2015-12-22ConductorF
Factor: 2666628939849214607 / TF: 1-62