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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
2519471Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 263
TF below 2^76 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 10000000
B2 = 20133835260
ECM
DigitsB1Curves
2550000253 / 280
Estimated T-Level: 24.5 ⓘ
LL
StatusDateUserResidueShift
VerifiedJohn Lloyd08BAA8FBE5E7ED9E0
Verified1999-04-13Ken Kiefer08BAA8FBE5E7ED9E1250558
Verified2018-06-05kkmrkkblmbrbk08BAA8FBE5E7ED9E859032
History
DateUserTypeResult
2025-05-01JossNF-PM1
B1=10000000, B2=20133835260
2025-04-09JossNF-PM1
B1=10000000, B2=10050107760
2023-01-24Architects CubedNF-PM1
B1=5000000, B2=8936884110
2022-12-12Architects CubedNF
no factor from 2^69 to 2^70
2021-05-13TJAOINF
no factor from 2^68 to 2^69
2019-04-29TJAOINF
no factor from 2^67 to 2^68
2018-06-05kkmrkkblmbrbkC-LL
08BAA8FBE5E7ED9E
2018-05-03mikrNF-PM1
B1=3000000, B2=135000000, E=12
2017-11-04JossNF-PM1
B1=600000, B2=6000000, E=6
2017-08-01Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-11-06ramgeisNF
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
2013-12-04Jerry HallettNF
no factor from 2^62 to 2^63
2012-06-13Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-03-02James HeinrichNF-PM1
B1=300000, B2=8000000, E=12
2011-01-06JossNF-PM1
B1=50000
2011-01-01JossNF-PM1
B1=30000
2010-12-19JossNF-PM1
B1=20000
2009-01-31Sturle SundeNF
no factor from 2^60 to 2^61