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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Exponent Range:










MnStatusDetails
29007941Factored
FactorDigitsBitsDate
1087256674073208275217605592786.52021-11-20 03:23:53
ECM
DigitsB1Curves
255000013 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Bad2006-07-10bradmtl10CE98C298CCEEBD27028494
Verified (Factored)2012-01-18-Anonymous-A351EAA65E9619FA12000202
Verified (Factored)2012-07-02GrunwalderGIMPA351EAA65E9619FA11157003
P-1 factors
DateFactorB1B2
2021-11-2110872566740732082752176055999700049829000
History
DateUserTypeResult
2021-11-20ATHF-PP1
Start=2/7, B1=1000000, B2=28000000, Factor: 108725667407320827521760559
2021-10-06TheJudgerNF
no factor from 2^74 to 2^75
2021-09-10TheJudgerNF
no factor from 2^73 to 2^74
2021-01-04Sid & AndyNF
no factor from 2^72 to 2^73
2020-08-05Sid & AndyNF
no factor from 2^71 to 2^72
2020-08-05Sid & AndyNF
no factor from 2^70 to 2^71
2017-02-11ramgeisNF
no factor from 2^69 to 2^70
2012-07-02GrunwalderGIMPC-LL
A351EAA65E9619FA
2012-01-18-Anonymous-C-LL
A351EAA65E9619FA
2011-08-11monstNF
no factor from 2^68 to 2^69