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
977065721Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
58623943271032.42008-05-27 23:49:45
12190905279902529611960.12015-12-22 20:51:33
History
DateUserTypeResult
2015-12-22ConductorF
Factor: 1219090527990252961 / TF: 1-62