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
3326857Composite: 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 = 6300000
B2 = 22713580890
ECM
DigitsB1Curves
2550000280 / 280
3025000059 / 640
Estimated T-Level: 25.5 ⓘ
LL
StatusDateUserResidueShift
VerifiedRoger Smith836E7F90E9DB96BE0
Verified2000-01-04Eric Fleet836E7F90E9DB96BE2250017
History
DateUserTypeResult
2025-06-18Architects CubedNF
no factor from 2^70 to 2^71
2023-05-09Sid & AndyNF-PM1
B1=6300000, B2=22713580890
2022-08-01TJAOINF
no factor from 2^69 to 2^70
2021-08-07MadPooNF
no factor from 2^68 to 2^69
2020-01-10BigBrotherNF-PM1
B1=3000000, B2=90000000, E=12
2018-11-19TJAOINF
no factor from 2^67 to 2^68
2017-02-27Gordon SpenceNF
no factor from 2^66 to 2^67
2016-04-21USAFSSNF-PM1
B1=225000, B2=6581250, E=12
2016-03-02ramgeisNF
no factor from 2^65 to 2^66
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-02-11VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-11VictordeHollanderNF
no factor from 2^63 to 2^64
2012-08-25GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-09-04markrNF
no factor from 2^61 to 2^62
2010-09-14markrNF-PM1
B1=95000, B2=2042500, E=6
2009-08-14Carsten KossendeyNF-PM1
B1=15000, B2=195000
2009-03-30S485122NF
no factor from 2^60 to 2^61