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
6997253TF
No factors below 272
TF target 267
P-1
B1 = 3500000
B2 = 9616446840
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
LL
StatusDateUserResidueShift
Bad1999-11-10Brian4F374CF4C51D882C418398
Verified2002-02-03Stephan GruppFC119BA1DD7BF90A2383574
Verified2004-07-26Shane SanfordFC119BA1DD7BF90A3113980
Verified2005-03-20Shane SanfordFC119BA1DD7BF90A2651433
History
DateUserTypeResult
2023-09-28ThaNF-PM1
B1=3500000, B2=9616446840
2021-09-26SRBaseNF
no factor from 2^71 to 2^72
2021-07-22takahashiNF-PM1
B1=1000000, B2=30000000, E=12
2020-09-20takahashiNF
no factor from 2^70 to 2^71
2020-07-29takahashiNF
no factor from 2^69 to 2^70
2020-04-03TJAOINF
no factor from 2^68 to 2^69
2019-05-07takahashiNF-PM1
B1=300000, B2=5000000, E=6
2018-02-27-Anonymous-NF
no factor from 2^67 to 2^68
2016-04-27Gordon SpenceNF
no factor from 2^66 to 2^67
2015-07-03VictordeHollanderNF
no factor from 2^65 to 2^66
2014-02-14lycornNF
no factor from 2^64 to 2^65
2014-02-09NesowaNF
no factor from 2^63 to 2^64
2012-08-26NesowaNF-PM1
B1=85000, B2=1530000, E=6