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
3468407Composite: 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 = 10000000
B2 = 15851575740
ECM
DigitsB1Curves
2550000280 / 280
3025000082 / 640
Estimated T-Level: 25.6 ⓘ
LL
StatusDateUserResidueShift
Verified1998-09-13Tony Knight01242A3564CF7C380
Verified1999-11-24Gintautas Miliauskas01242A3564CF7C382778749
History
DateUserTypeResult
2025-05-29Architects CubedNF
no factor from 2^70 to 2^71
2024-08-21JossNF-PM1
B1=10000000, B2=15851575740
2024-01-11JossNF-PM1
B1=2420738, B2=5029784760
2022-05-18TJAOINF
no factor from 2^69 to 2^70
2021-03-30axnNF-PM1
B1=20000000, B2=1000000000
2021-01-08axnNF
no factor from 2^68 to 2^69
2019-01-28TJAOINF
no factor from 2^67 to 2^68
2017-02-10Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-01-04ramgeisNF
no factor from 2^65 to 2^66
2015-02-07VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-07VictordeHollanderNF
no factor from 2^63 to 2^64
2014-09-24HBendtzNF-PM1
B1=500000, B2=10000000, E=12
2014-07-28JossNF-PM1
B1=78505
2012-08-18GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-11-10USAFSSNF-PM1
B1=60000, B2=990000, E=6
2011-07-23markrNF
no factor from 2^61 to 2^62
2009-07-06Carsten KossendeyNF-PM1
B1=20000, B2=235000
2009-03-20S485122NF
no factor from 2^60 to 2^61