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
2989367Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 264
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 56797974
B2 = 1284463520340
ECM
DigitsB1Curves
2550000280 / 280
30250000108 / 640
Estimated T-Level: 25.8 ⓘ
LL
StatusDateUserResidueShift
VerifiedMikko Eerola644FCB0D923CA1180
Verified1999-05-16Robert Mutschler644FCB0D923CA1182782572
Verified2018-10-22kkmrkkblmbrbk644FCB0D923CA118578388
History
DateUserTypeResult
2024-12-17yuriy_5-1NF-PM1
B1=56797974, B2=1284463520340
2023-09-01ThaNF-PM1
B1=5000000, B2=28404656280
2023-06-03JossNF-PM1
B1=1000000, B2=1840268430
2023-03-24TJAOINF
no factor from 2^69 to 2^70
2023-03-10JossNF-PM1
B1=1000000, B2=284427990
2021-04-21TJAOINF
no factor from 2^68 to 2^69
2019-11-09BigBrotherNF-PM1
B1=3000000, B2=90000000, E=12
2018-12-28chuenkitNF
no factor from 2^67 to 2^68
2018-10-22kkmrkkblmbrbkC-LL
644FCB0D923CA118
2017-12-07Gordon SpenceNF
no factor from 2^66 to 2^67
2017-07-10JossNF-PM1
B1=396800, B2=3968000, E=6
2016-06-21JossNF-PM1
B1=198400, B2=4050000, E=6
2016-02-29ramgeisNF
no factor from 2^65 to 2^66
2015-02-06lycornNF
no factor from 2^64 to 2^65
2015-02-06lycornNF
no factor from 2^63 to 2^64
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2011-11-25Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-10-22markrNF-PM1
B1=100000, B2=2025000, E=6
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61