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
128997991Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
48796969731276653149912272.02020-05-18 20:08:30
History
DateUserTypeResult
2020-05-18Alex_soldierF
Factor: 4879696973127665314991 / TF: 72-73
2015-12-05PascalBieriNF
no factor from 2^71 to 2^72
2015-11-21SMoffatNF
no factor from 2^70 to 2^71
2015-11-08SourceBinary.comNF
no factor from 2^69 to 2^70
2015-11-06ITSNF
no factor from 2^68 to 2^69
2015-09-12el groccoNF
no factor from 2^67 to 2^68
2015-01-12Thomas StorkNF
no factor from 2^66 to 2^67
2012-10-02sasaki3NF
no factor from 2^65 to 2^66
2010-11-09Torchwood InstituteNF
no factor from 2^64 to 2^65
2010-05-30sannerud.comNF
no factor from 2^63 to 2^64