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
977220581Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
1465830871511237.12008-06-01 01:29:25
20414673825312208791960.82015-12-23 16:13:09
History
DateUserTypeResult
2015-12-23ConductorF
Factor: 2041467382531220879 / TF: 1-62