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
3126979Factored
FactorDigitsBitsDate
14008865931030.4old
216449486391134.32008-09-07 19:44:18
189904981664819280012064.02017-07-03 10:38:25
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-28alpertronBA37AF5AFAAEC7A73013
Verified2017-11-18Oliver KruseBA37AF5AFAAEC7A73191942713
History
DateUserTypeResult
2022-12-09LordJuliusNF
no factor from 2^64 to 2^65
2022-10-07JossNF-PM1
B1=1200000, B2=451528350
2022-09-04JossNF-PM1
B1=1200000, B2=236513550
2022-03-20LordJuliusNF
no factor from 2^66 to 2^67
2022-03-20LordJuliusNF
no factor from 2^65 to 2^66
2022-01-07JossNF-PM1
B1=1050000, B2=116447100
2021-10-27JossNF
no factor from 2^68 to 2^69
2021-07-18JossNF
no factor from 2^67 to 2^68
2021-01-14JossNF
no factor from 2^64 to 2^65
2021-01-09JossNF
no factor from 2^63 to 2^64
2021-01-06JossNF
no factor from 2^62 to 2^63
2021-01-05JossNF
no factor from 2^61 to 2^62
2021-01-04JossNF
no factor from 2^60 to 2^61
2021-01-03JossNF-PM1
B1=312697, B2=3126979, E=6
2017-11-18Oliver KruseC-PRP
M3126979/1400886593/21644948639/18990498166481928001 : BA37AF5AFAAEC7A7
PRP: Verified
PRP without proof (not generated)
2017-09-28alpertronC-PRP
M3126979/1400886593/18990498166481928001/21644948639 : BA37AF5AFAAEC7A7
PRP: Verified
PRP without proof (not generated)
2017-07-03TJAOIF
Factor: 18990498166481928001 / TF: 64-65
2008-09-07Will EdgingtonF
Factor: 21644948639