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
977347223Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
234563333531134.42008-05-28 22:13:47
17831819710935095211960.62015-12-23 16:33:46
History
DateUserTypeResult
2015-12-23ConductorF
Factor: 1783181971093509521 / TF: 1-62