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
977497837Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
390999134811135.22008-06-01 01:38:49
16920896211215736231960.62015-12-23 17:07:58
History
DateUserTypeResult
2015-12-23ConductorF
Factor: 1692089621121573623 / TF: 1-62