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
11601389Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 276
TF target 268
P-1
B1 = 47505556
B2 = 140197877820
ECM
DigitsB1Curves
255000028 / 280
Estimated T-Level: 20.5 ⓘ
LL
StatusDateUserResidueShift
Verified2001-01-28Michael T. Fischer9B0A4A0AA943CBAB643379
Verified2004-03-16Ars Technica Team Prime Rib9B0A4A0AA943CBAB8398727
History
DateUserTypeResult
2025-02-17yuriy_5-1NF-PM1
B1=47505556, B2=140197877820
2024-09-02yuriy_5-1NF
no factor from 2^75 to 2^76
2024-09-02yuriy_5-1NF
no factor from 2^74 to 2^75
2024-09-02yuriy_5-1NF
no factor from 2^73 to 2^74
2024-08-14vshNF
no factor from 2^72 to 2^73
2024-04-26yuriy_5-1NF-PM1
B1=14680064, B2=131488517160
2023-01-08BommerNF
no factor from 2^71 to 2^72
2021-08-19SRBaseNF
no factor from 2^70 to 2^71
2021-08-06SRBaseNF
no factor from 2^69 to 2^70
2021-05-01Architects CubedNF-PM1
B1=584000, B2=43766000
2018-01-02ramgeisNF
no factor from 2^68 to 2^69
2018-01-02ramgeisNF
no factor from 2^67 to 2^68
2016-03-03ramgeisNF
no factor from 2^66 to 2^67
2015-04-28Sid & AndyNF-PM1
B1=125000, B2=2187500, E=6
2014-08-26NRNF
no factor from 2^65 to 2^66
2013-11-04lycornNF
no factor from 2^64 to 2^65