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
422006243Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5225564618836018981692168.82016-12-14 20:04:58
History
DateUserTypeResult
2016-12-14ConductorF
Factor: 522556461883601898169 / TF: 68-69
2015-04-11sasakiNF
no factor from 2^66 to 2^68
2014-07-07Grant McCrackenNF
no factor from 2^65 to 2^66