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
11573257Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 268
P-1
B1 = 2500000
B2 = 7128469530
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Verified2001-01-28tom ehlertC4E73DD1DDDAB3F77015946
Verified2004-07-26Ars Technica Team Prime RibC4E73DD1DDDAB3F7184088
History
DateUserTypeResult
2024-11-17TheJudgerNF
no factor from 2^72 to 2^73
2024-04-30linamentNF-PM1
B1=2500000, B2=7128469530
2024-04-29linamentNF-PM1
B1=2500000
2023-01-15Naegi MakotoNF
no factor from 2^71 to 2^72
2021-10-09mikrNF
no factor from 2^70 to 2^71
2021-09-30lycornNF
no factor from 2^69 to 2^70
2020-01-28riccardo ubertiNF-PM1
B1=430000, B2=8500000, E=12
2018-01-14ramgeisNF
no factor from 2^68 to 2^69
2018-01-14ramgeisNF
no factor from 2^67 to 2^68
2016-01-15VictordeHollanderNF
no factor from 2^66 to 2^67
2014-12-20NesowaNF
no factor from 2^65 to 2^66
2013-11-07lycornNF
no factor from 2^64 to 2^65