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
977881979Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
19557639591030.92008-06-01 01:55:04
13953701981858271111960.32015-12-23 21:02:38
History
DateUserTypeResult
2025-06-05mikrNF
no factor from 2^68 to 2^71
2015-12-23ConductorF
Factor: 1395370198185827111 / TF: 1-62