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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
5169487Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 266
P-1
B1 = 4000000
B2 = 10285831710
ECM
DigitsB1Curves
255000096 / 280
Estimated T-Level: 21.7 ⓘ
LL
StatusDateUserResidueShift
Verified1999-03-26Stephen Wood40FCEC5747341E4C0
Verified2000-12-14Lari Kannisto40FCEC5747341E4C520131
History
DateUserTypeResult
2024-10-08onlinegameNF
no factor from 2^71 to 2^72
2022-07-30Sid & AndyNF-PM1
B1=4000000, B2=10285831710
2022-01-26mikrNF
no factor from 2^70 to 2^71
2022-01-17Gordon SpenceNF
no factor from 2^69 to 2^70
2020-11-09TJAOINF
no factor from 2^68 to 2^69
2020-09-17Dylan DelgadoNF-PM1
B1=1000000, B2=22500000, E=12
2018-06-20ramgeisNF
no factor from 2^67 to 2^68
2017-12-19Squeeky_SquirrelNF-PM1
B1=310000, B2=9222500, E=12
2016-06-03Gordon SpenceNF
no factor from 2^66 to 2^67
2015-08-09snme2pm1NF
no factor from 2^65 to 2^66
2014-12-17VictordeHollanderNF
no factor from 2^64 to 2^65
2014-12-17VictordeHollanderNF
no factor from 2^63 to 2^64
2009-10-02USAFSSNF-PM1
B1=60000, B2=975000, E=6
2009-06-24GrunwalderGIMPNF
no factor from 2^62 to 2^63