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
397771123Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5202313595629558100572168.82015-10-29 08:38:51
History
DateUserTypeResult
2015-10-29ConductorF
Factor: 520231359562955810057 / TF: 68-69
2015-10-29ConductorNF
no factor from 2^67 to 2^68
2015-10-29Mario TranquilliniNF
no factor from 2^66 to 2^67
2014-06-06RichardNF
no factor from 2^65 to 2^66
2010-05-08Architects CubedNF
no factor from 2^64 to 2^65