Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
31024991Factored
FactorDigitsBitsDate
627052583063285647132492375.72021-09-23 15:31:55
ECM
DigitsB1Curves
25500004 / 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)2009-05-11DocPL5678BBCB4178932A25900191
Verified (Factored)2013-10-15GrunwalderGIMP5678BBCB4178932A9134199
History
DateUserTypeResult
2021-09-23ATHF-PP1
Start=2/7, B1=300000, B2=10800000, Factor: 62705258306328564713249
2019-06-24LaurVNF
no factor from 2^71 to 2^72
2018-11-19ramgeisNF
no factor from 2^70 to 2^71
2013-10-15GrunwalderGIMPC-LL
5678BBCB4178932A
2013-03-27bcp19NF
no factor from 2^69 to 2^70
2012-05-08bcp19NF
no factor from 2^68 to 2^69
2011-05-24UngelovendeNF
no factor from 2^67 to 2^68
2009-05-11DocPLC-LL
5678BBCB4178932A