Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
3762263Composite: 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 = 7700000
B2 = 14792505000
ECM
DigitsB1Curves
2550000280 / 280
3025000064 / 640
Estimated T-Level: 25.5 ⓘ
LL
StatusDateUserResidueShift
Verified1998-09-13Stephen ScottE164D57C174B620D0
Bad1999-08-22Miall CediloteD7946F18EE73D5B93464471
Verified2000-01-12Peter WerneE164D57C174B620D1676757
History
DateUserTypeResult
2025-05-11Architects CubedNF
no factor from 2^70 to 2^71
2023-05-22Sid & AndyNF-PM1
B1=7700000, B2=14792505000
2022-11-03JossNF-PM1
B1=1000000, B2=1004312400
2021-03-28axnNF
no factor from 2^69 to 2^70
2020-12-06axnNF
no factor from 2^68 to 2^69
2019-02-08YxinityNF
no factor from 2^67 to 2^68
2019-01-28TJAOINF
no factor from 2^67 to 2^68
2016-11-09Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-28ramgeisNF
no factor from 2^65 to 2^66
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-01-11mikrNF-PM1
B1=1600000, B2=66000000, E=12
2015-01-25VictordeHollanderNF
no factor from 2^64 to 2^65
2015-01-25VictordeHollanderNF
no factor from 2^63 to 2^64
2012-04-04Squeeky_SquirrelNF-PM1
B1=110000, B2=2035000, E=6
2012-03-23GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-04-24markrNF
no factor from 2^61 to 2^62
2009-07-11Carsten KossendeyNF-PM1
B1=20000, B2=265000
2009-03-03S485122NF
no factor from 2^60 to 2^61