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
9101269Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 268
TF below 2^77 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 20000000
B2 = 130807840800
ECM
DigitsB1Curves
2550000256 / 280
Estimated T-Level: 24.6 ⓘ
LL
StatusDateUserResidueShift
VerifiedKlaus Kastens55889CC7ABF6B1004560716
Verified2000-03-15Thomas McNulty55889CC7ABF6B1007839823
Bad2003-12-13Pawel Zak770F00C361B54B626848336
History
DateUserTypeResult
2025-07-08axnNF-PM1
B1=20000000, B2=130807840800
2022-01-04ThaNF-PM1
B1=2000000, B2=3522519000
2021-12-27-Anonymous-NF
no factor from 2^72 to 2^73
2021-10-15SRBaseNF
no factor from 2^71 to 2^72
2021-08-11SRBaseNF
no factor from 2^70 to 2^71
2020-01-02NumberwangNF-PM1
B1=265000, B2=5035000, E=6
2019-12-03mnd9NF
no factor from 2^69 to 2^70
2019-10-15mnd9NF
no factor from 2^68 to 2^69
2017-01-29snme2pm1NF
no factor from 2^67 to 2^68
2016-03-30snme2pm1NF
no factor from 2^66 to 2^67
2015-05-17VictordeHollanderNF
no factor from 2^65 to 2^66
2013-09-11NesowaNF
no factor from 2^64 to 2^65
2012-05-11Squeeky_SquirrelNF-PM1
B1=110000, B2=2007500, E=6