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
11203571Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 268
P-1
B1 = 100000000
B2 = 200168684100
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Verified2001-02-04Dave Shapiro58282114CC3EDF7A10622414
Verified2004-03-08Mikko Tommila58282114CC3EDF7A4089389
History
DateUserTypeResult
2025-10-13vshNF-PM1
B1=100000000, B2=200168684100
2025-02-02James HeinrichNF
no factor from 2^72 to 2^74
2025-01-17vshNF
no factor from 2^73 to 2^74
2024-06-15vshNF-PM1
B1=10000000, B2=20021278200
2024-06-14vshNF
no factor from 2^72 to 2^73
2022-01-01LaurVNF-PM1
B1=6189107, B2=185673210
2021-10-30SRBaseNF
no factor from 2^71 to 2^72
2021-08-15SRBaseNF
no factor from 2^70 to 2^71
2021-08-06SRBaseNF
no factor from 2^69 to 2^70
2018-03-25ThaNF-PM1
B1=300000, B2=6000000, E=6
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
2015-02-27NumberwangNF
no factor from 2^65 to 2^66
2013-11-22lycornNF
no factor from 2^64 to 2^65