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
977477777Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
58648666631032.42008-05-30 06:34:05
19172719323987848091960.72015-12-23 16:59:59
History
DateUserTypeResult
2015-12-23ConductorF
Factor: 1917271932398784809 / TF: 1-62