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
2011381Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 262
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 14600000
B2 = 48229381200
ECM
DigitsB1Curves
2550000280 / 280
30250000109 / 640
Estimated T-Level: 25.9 ⓘ
LL
StatusDateUserResidueShift
VerifiedMats Dahlgren528080ED2DAD7B2E0
Bad1999-01-17Charles DorianEC354C04F36442B81707196
Verified1999-04-23C. Cooper / S. Boone528080ED2DAD7B2E255689
Verified2016-06-21Mark Rose528080ED2DAD7B2E1066800
History
DateUserTypeResult
2023-08-04Sid & AndyNF-PM1
B1=14600000, B2=48229381200
2023-02-03JossNF-PM1
B1=1000000, B2=4466940660
2022-10-23Architects CubedNF
no factor from 2^69 to 2^70
2021-07-29TJAOINF
no factor from 2^68 to 2^69
2020-10-05Bruno VictalNF-PM1
B1=10000000, B2=350000000
2019-03-18chuenkitNF
no factor from 2^67 to 2^68
2018-12-28mikrNF-PM1
B1=4000000, B2=200000000, E=12
2016-07-16Gordon SpenceNF
no factor from 2^66 to 2^67
2016-06-21Mark RoseC-LL
528080ED2DAD7B2E
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-10-29ramgeisNF
no factor from 2^65 to 2^66
2015-03-15VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-15VictordeHollanderNF
no factor from 2^63 to 2^64
2013-10-08David CampeauNF-PM1
B1=580000, B2=15080000, E=12
2013-02-11dbaughNF
no factor from 2^62 to 2^63
2012-01-20Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-11-29JossNF-PM1
B1=201138
2009-01-04Sturle SundeNF
no factor from 2^60 to 2^61