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
6900973TF
No factors below 272
TF target 267
P-1
B1 = 3500000
B2 = 9616446840
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
LL
StatusDateUserResidueShift
Bad1999-06-15Bradley AndrewsD211C3C10BE8ED595305402
Verified2002-01-15Scott Kurowski6C1ABF02A440C01C516972
Verified2002-07-20Ars Technica Team Prime Rib6C1ABF02A440C01C5549379
History
DateUserTypeResult
2023-06-24ThaNF-PM1
B1=3500000, B2=9616446840
2021-09-28SRBaseNF
no factor from 2^71 to 2^72
2021-08-10SRBaseNF
no factor from 2^70 to 2^71
2020-12-20takahashiNF
no factor from 2^69 to 2^70
2019-11-25mnd9NF
no factor from 2^68 to 2^69
2019-05-16takahashiNF-PM1
B1=1500000, B2=30000000, E=12
2018-02-27-Anonymous-NF
no factor from 2^67 to 2^68
2016-03-31Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-21VictordeHollanderNF
no factor from 2^65 to 2^66
2014-02-17lycornNF
no factor from 2^64 to 2^65
2014-02-09NesowaNF
no factor from 2^63 to 2^64
2009-06-20Roman MaznichenkoNF-PM1
B1=100000, B2=10000000, E=12