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
195558931Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
4162793281782157962232168.52015-09-14 14:55:20
4680099718829345200572168.72015-09-14 14:55:18
History
DateUserTypeResult
2015-09-14demfloroF
Factor: 416279328178215796223 / TF: 68-69
2015-09-14demfloroF
Factor: 468009971882934520057 / TF: 68-69
2015-09-14demfloroNF
no factor from 2^66 to 2^68
2013-06-24MucolNF
no factor from 2^65 to 2^66
2011-04-23RichardNF
no factor from 2^64 to 2^65
2010-08-06sasaki3NF
no factor from 2^63 to 2^64