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
615999277Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
6644221434346720725912169.22018-06-12 13:49:11
History
DateUserTypeResult
2025-03-08James HeinrichF
Factor: 664422143434672072591 / TF: 69-70
2018-06-12Alex_soldierF
Factor: 664422143434672072591 / TF: 69-70*
2017-03-05sasakiNF
no factor from 2^68 to 2^69
2017-01-04sasakiNF
no factor from 2^67 to 2^68
2014-03-01sasakiNF
no factor from 2^65 to 2^67