Marin Mersenne 2^P-1
Username
Password
Forgot password?
Blue
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
4161433Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 265
TF below 2^80 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 6200000
B2 = 28122644550
ECM
DigitsB1Curves
2550000280 / 280
3025000066 / 640
Estimated T-Level: 25.5 ⓘ
LL
StatusDateUserResidueShift
VerifiedTom SeitzF1ADA82C4F13FAD30
Verified2000-02-09Charles YoungF1ADA82C4F13FAD3848701
History
DateUserTypeResult
2024-12-15bayanneNF
no factor from 2^71 to 2^72
2022-11-27DRobinsonPENF-PM1
B1=6200000, B2=28122644550
2022-05-10mikrNF
no factor from 2^70 to 2^71
2021-06-30axnNF
no factor from 2^69 to 2^70
2021-06-30axnNF
no factor from 2^68 to 2^69
2020-12-28Dylan DelgadoNF-PM1
B1=1000000, B2=20000000, E=12
2020-11-28Carlos PinhoNF-PM1
B1=153000, B2=4012000, E=6
2018-11-29YxinityNF
no factor from 2^67 to 2^68
2017-12-18YxinityNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-06-04snme2pm1NF
no factor from 2^65 to 2^66
2013-10-29David CampeauNF
no factor from 2^64 to 2^65
2013-10-04JayderNF
no factor from 2^63 to 2^64
2013-08-04Squeeky_SquirrelNF-PM1
B1=125000, B2=2375000, E=6
2011-08-13USAFSSNF-PM1
B1=45000, B2=630000, E=6
2011-07-17GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-01-21Grant McCrackenNF
no factor from 2^61 to 2^62
2009-08-01Carsten KossendeyNF-PM1
B1=25000, B2=325000