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
93461141Factored
FactorDigitsBitsDate
4285519798953840881179212478.52020-01-07 20:46:55
P-1 factors
DateFactorB1B2
2020-01-0742855197989538408811792172000013860000
History
DateUserTypeResult
2020-01-07ky0urakuF-PM1
Factor: 428551979895384088117921 / (P-1, B1=720000, B2=13860000, E=12)
2019-08-25TheJudgerNF
no factor from 2^76 to 2^77
2019-08-25TheJudgerNF
no factor from 2^75 to 2^76
2019-08-25TheJudgerNF
no factor from 2^74 to 2^75
2018-08-06chuenkitNF
no factor from 2^73 to 2^74
2018-08-06chuenkitNF
no factor from 2^72 to 2^73
2018-08-06chuenkitNF
no factor from 2^71 to 2^72
2014-11-29RichD0NF
no factor from 2^70 to 2^71
2014-09-22ITSNF
no factor from 2^69 to 2^70
2014-09-18qwertyuio999NF
no factor from 2^68 to 2^69
2014-02-09SMoffatNF
no factor from 2^67 to 2^68
2013-09-09processinfoNF
no factor from 2^66 to 2^67
2013-08-29Norman LeyNF
no factor from 2^65 to 2^66
2011-01-07Architects CubedNF
no factor from 2^64 to 2^65