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
5466431Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 266
P-1
B1 = 14987000
B2 = 203378895720
ECM
DigitsB1Curves
2550000106 / 280
Estimated T-Level: 21.9 ⓘ
LL
StatusDateUserResidueShift
Verified1998-10-04Joseph CharrierB236BFE337D83FF40
Verified2000-08-10zhengyu guoB236BFE337D83FF44387324
History
DateUserTypeResult
2025-04-21Jason LynchNF-PM1
B1=14987000, B2=203378895720
2021-10-22axnNF-PM1
B1=8000000, B2=400000000
2021-10-10SRBaseNF
no factor from 2^71 to 2^72
2021-08-24SRBaseNF
no factor from 2^70 to 2^71
2021-08-20SRBaseNF
no factor from 2^69 to 2^70
2020-09-07TJAOINF
no factor from 2^68 to 2^69
2019-09-12USAFSSNF-PM1
B1=330000, B2=9817500, E=12
2018-06-29ramgeisNF
no factor from 2^67 to 2^68
2016-07-01Gordon SpenceNF
no factor from 2^66 to 2^67
2015-08-24snme2pm1NF
no factor from 2^65 to 2^66
2014-12-30monstNF
no factor from 2^64 to 2^65
2014-12-30snme2pm1NF
no factor from 2^63 to 2^64
2010-11-08Squeeky_SquirrelNF-PM1
B1=60000, B2=1035000, E=6
2009-05-07GrunwalderGIMPNF
no factor from 2^62 to 2^63