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
977185603Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
123910965027963771753.52008-06-11 00:23:57
15623881816118439911960.42015-12-23 16:02:47
History
DateUserTypeResult
2015-12-23ConductorF
Factor: 1562388181611843991 / TF: 1-62