Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
8109683Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 267
P-1
B1 = 7513000
B2 = 101575518330
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
LL
StatusDateUserResidueShift
Verified1999-09-07Stephen Wood68D7C407D44D521C5484149
Verified2002-11-16shigehiro sasaki68D7C407D44D521C418167
History
DateUserTypeResult
2025-05-29Jason LynchNF-PM1
B1=7513000, B2=101575518330
2022-06-23FlaukrotistNF
no factor from 2^72 to 2^73
2022-03-08FlaukrotistNF-PM1
B1=6000000, B2=165000000
2021-01-12Smok_bmv NF
no factor from 2^71 to 2^72
2021-01-12Smok_bmv NF
no factor from 2^70 to 2^71
2021-01-12Smok_bmv NF
no factor from 2^69 to 2^70
2019-11-25mnd9NF
no factor from 2^68 to 2^69
2018-07-03chuenkitNF
no factor from 2^67 to 2^68
2015-11-26snme2pm1NF
no factor from 2^66 to 2^67
2015-04-20snme2pm1NF
no factor from 2^65 to 2^66
2013-12-26David CampeauNF
no factor from 2^64 to 2^65
2012-09-22James HeinrichNF-PM1
B1=205000, B2=4561250, E=6
2012-07-21AxelssonNF
no factor from 2^63 to 2^64