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
6918481TF
No factors below 272
TF target 267
P-1
B1 = 3500000
B2 = 9616446840
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2 ⓘ
LL
StatusDateUserResidueShift
Verified1999-03-15Josh Atwell99991DFA16ECB5E20
Verified2002-01-28Kai M.J. Konka99991DFA16ECB5E26590600
Verified2015-05-03MadPoo99991DFA16ECB5E2656743
History
DateUserTypeResult
2023-07-17ThaNF-PM1
B1=3500000, B2=9616446840
2023-07-02takahashiNF-PM1
B1=2500000, B2=50028510
2021-09-25SRBaseNF
no factor from 2^71 to 2^72
2021-08-11SRBaseNF
no factor from 2^70 to 2^71
2021-07-18takahashiNF
no factor from 2^69 to 2^70
2020-05-15TJAOINF
no factor from 2^68 to 2^69
2020-01-11takahashiNF-PM1
B1=600000, B2=12000000, E=12
2018-02-27-Anonymous-NF
no factor from 2^67 to 2^68
2016-04-02Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-26VictordeHollanderNF
no factor from 2^65 to 2^66
2015-05-03MadPooC-LL
99991DFA16ECB5E2
2014-02-17lycornNF
no factor from 2^64 to 2^65
2014-02-09NesowaNF
no factor from 2^63 to 2^64
2011-11-21James HeinrichNF-PM1
B1=130000, B2=2665000, E=6