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
977560721Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
346315822542066891754.92008-06-11 00:59:06
47124428017017433431962.02015-12-23 17:36:57
History
DateUserTypeResult
2015-12-23ConductorF
Factor: 4712442801701743343 / TF: 1-62