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
4199023Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 265
P-1
B1 = 6200000
B2 = 33322740360
ECM
DigitsB1Curves
2550000132 / 280
Estimated T-Level: 22.4 ⓘ
LL
StatusDateUserResidueShift
BadNicolau Corcao Saldanha5594B00D06A705AB0
Verified1999-11-24Cody MackF2C64BC0FF91F498206602
Verified2000-02-09Team love_festF2C64BC0FF91F4982949722
History
DateUserTypeResult
2024-11-21Andrew BNF
no factor from 2^71 to 2^72
2022-12-16DRobinsonPENF-PM1
B1=6200000, B2=33322740360
2022-06-04mikrNF
no factor from 2^70 to 2^71
2021-06-18axnNF
no factor from 2^69 to 2^70
2021-05-24TJAOINF
no factor from 2^68 to 2^69
2021-04-20Zhang RuichongNF-PM1
B1=320000, B2=12800000
2018-12-15YxinityNF
no factor from 2^67 to 2^68
2017-12-27YxinityNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-06-07snme2pm1NF
no factor from 2^65 to 2^66
2013-11-13David CampeauNF
no factor from 2^64 to 2^65
2013-10-31JayderNF
no factor from 2^63 to 2^64
2013-08-30Squeeky_SquirrelNF-PM1
B1=130000, B2=2567500, E=6
2011-08-27USAFSSNF-PM1
B1=45000, B2=641250, E=6
2011-05-28GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-11-15Grant McCrackenNF
no factor from 2^61 to 2^62
2009-08-04Carsten KossendeyNF-PM1
B1=25000, B2=337500