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
977614199Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
19552283991030.92008-06-01 01:43:46
19709315333256476891960.82015-12-23 19:39:18
History
DateUserTypeResult
2015-12-23ConductorF
Factor: 1970931533325647689 / TF: 1-62