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
11271983Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 268
P-1
B1 = 10000000
B2 = 20013932400
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Verified2001-05-20bOnKAB181F29B17702F110255079
Verified2004-04-29Jonas KremerAB181F29B17702F18633088
History
DateUserTypeResult
2025-02-13James HeinrichNF
no factor from 2^72 to 2^73
2024-10-06vshNF
no factor from 2^72 to 2^73
2024-05-10vshNF-PM1
B1=10000000, B2=20013932400
2024-04-17vshNF-PM1
B1=8600000, B2=15009790950
2024-04-15vshNF-PM1
B1=4300000, B2=5657640450
2021-10-30SRBaseNF
no factor from 2^71 to 2^72
2021-08-14SRBaseNF
no factor from 2^70 to 2^71
2021-08-06SRBaseNF
no factor from 2^69 to 2^70
2020-04-24riccardo ubertiNF-PM1
B1=430000, B2=8500000, E=12
2017-12-27ramgeisNF
no factor from 2^68 to 2^69
2017-12-27ramgeisNF
no factor from 2^67 to 2^68
2015-12-28VictordeHollanderNF
no factor from 2^66 to 2^67
2015-02-01NumberwangNF
no factor from 2^65 to 2^66
2013-11-21lycornNF
no factor from 2^64 to 2^65