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
3220193Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 271
TF target 264
TF below 2^80 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 8700000
B2 = 22323365610
ECM
DigitsB1Curves
2550000280 / 280
3025000075 / 640
Estimated T-Level: 25.6 ⓘ
LL
StatusDateUserResidueShift
VerifiedDax PratherA5BF1A5474F74BF10
Verified1998-07-05Marco BrunoA5BF1A5474F74BF10
Verified1999-06-15James ArnoldA5BF1A5474F74BF11300438
History
DateUserTypeResult
2025-07-06Architects CubedNF
no factor from 2^70 to 2^71
2023-03-12Sid & AndyNF-PM1
B1=8700000, B2=22323365610
2022-05-31TJAOINF
no factor from 2^69 to 2^70
2021-02-01ViliamFNF
no factor from 2^68 to 2^69
2020-03-03mikrNF-PM1
B1=4000000, B2=150000000, E=12
2018-12-24TJAOINF
no factor from 2^67 to 2^68
2017-03-19Gordon SpenceNF
no factor from 2^66 to 2^67
2016-05-15JossNF-PM1
B1=351305, B2=6323490, E=6
2015-12-14Squeeky_SquirrelNF-PM1
B1=155000, B2=3952500, E=6
2015-06-24ThaNF
no factor from 2^65 to 2^66
2015-02-15VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-15VictordeHollanderNF
no factor from 2^63 to 2^64
2014-09-29JossNF-PM1
B1=99864
2014-06-03JossNF-PM1
B1=79932
2013-01-03dbaughNF
no factor from 2^62 to 2^63
2011-09-19markrNF
no factor from 2^61 to 2^62
2011-09-04USAFSSNF-PM1
B1=60000, B2=1035000, E=6
2009-07-03Carsten KossendeyNF-PM1
B1=15000, B2=191250
2009-04-07S485122NF
no factor from 2^60 to 2^61