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
2512837Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 263
TF below 2^80 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 10000000
B2 = 20133835260
ECM
DigitsB1Curves
2550000280 / 280
3025000084 / 640
Estimated T-Level: 25.7 ⓘ
LL
StatusDateUserResidueShift
VerifiedKiel Foreman1001490F67A0F4A80
Verified1999-03-26James Rice1001490F67A0F4A81590919
Verified2018-06-04kkmrkkblmbrbk1001490F67A0F4A82143667
History
DateUserTypeResult
2025-04-26JossNF-PM1
B1=10000000, B2=20133835260
2025-04-06JossNF-PM1
B1=10000000, B2=10050107760
2023-01-07Architects CubedNF-PM1
B1=5000000, B2=8936884110
2022-12-15Architects CubedNF
no factor from 2^69 to 2^70
2021-06-03TJAOINF
no factor from 2^68 to 2^69
2019-05-06TJAOINF
no factor from 2^67 to 2^68
2018-06-04kkmrkkblmbrbkC-LL
1001490F67A0F4A8
2017-07-31Gordon SpenceNF
no factor from 2^66 to 2^67
2016-03-07mikrNF-PM1
B1=3200000, B2=112000000, E=12
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-11-05ramgeisNF
no factor from 2^65 to 2^66
2015-02-18VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-18VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-14dbaughNF
no factor from 2^62 to 2^63
2012-06-12Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-10-05markrNF-PM1
B1=170000, B2=3952500, E=6
2011-01-06JossNF-PM1
B1=50000
2011-01-01JossNF-PM1
B1=30000
2010-12-19JossNF-PM1
B1=20000
2009-01-30Sturle SundeNF
no factor from 2^60 to 2^61