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
31025003Factored
FactorDigitsBitsDate
123674532720471363052092373.42021-09-23 17:24:40
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)2006-09-04Stacy HawthorneE85B6DB7B26FB33D13086857
Verified (Factored)2013-05-17Scott KurowskiE85B6DB7B26FB33D11581917
History
DateUserTypeResult
2021-09-23ATHF-PP1
Start=2/7, B1=300000, B2=10800000, Factor: 12367453272047136305209
2019-06-25LaurVNF
no factor from 2^71 to 2^72
2018-04-22ramgeisNF
no factor from 2^70 to 2^71
2013-03-31GrunwalderGIMPNF
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