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
3974939Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 271
TF target 265
P-1
B1 = 10000000
B2 = 30344384070
ECM
DigitsB1Curves
2550000153 / 280
Estimated T-Level: 22.7 ⓘ
LL
StatusDateUserResidueShift
Verified1999-04-23Paul Heuwinkel066AA81D447E5AF50
Verified2000-05-24Holger Krull066AA81D447E5AF53222344
History
DateUserTypeResult
2025-07-17JossNF-PM1
B1=10000000, B2=30344384070
2024-12-21JossNF-PM1
B1=10000000, B2=20173583430
2024-04-04JossNF-PM1
B1=10000000, B2=10002782790
2022-04-29KingNF-PM1
B1=5000000, B2=2007076500
2021-06-02-Anonymous-NF
no factor from 2^70 to 2^71
2021-05-12axnNF
no factor from 2^69 to 2^70
2020-05-08TJAOINF
no factor from 2^68 to 2^69
2018-12-29YxinityNF
no factor from 2^67 to 2^68
2016-12-15Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-04ramgeisNF
no factor from 2^65 to 2^66
2013-10-26David CampeauNF
no factor from 2^64 to 2^65
2013-07-02JayderNF
no factor from 2^63 to 2^64
2012-02-20GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-04-27markrNF
no factor from 2^61 to 2^62
2011-04-26Carsten KossendeyNF-PM1
B1=265000, B2=7618750, E=12
2009-07-27Carsten KossendeyNF-PM1
B1=20000, B2=290000