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
31062257Factored
FactorDigitsBitsDate
143990607709215478079032373.62021-10-03 19:39:41
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2006-05-12David TaylorA02E6E0BDFD13D053032158
Verified (Factored)2013-11-26WRA02E6E0BDFD13D052226620
History
DateUserTypeResult
2021-10-03ATHF-PP1
Start=2/7, B1=300000, B2=6300000, Factor: 14399060770921547807903
2019-06-29LaurVNF
no factor from 2^71 to 2^72
2018-04-22ramgeisNF
no factor from 2^70 to 2^71
2013-11-26WRC-LL
A02E6E0BDFD13D05
2013-01-29LaurVNF
no factor from 2^69 to 2^70
2012-06-03bcp19NF
no factor from 2^68 to 2^69
2011-05-27UngelovendeNF
no factor from 2^67 to 2^68