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
11628641Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 268
P-1
B1 = 12582912
B2 = 109573764300
ECM
DigitsB1Curves
255000032 / 280
Estimated T-Level: 20.6 ⓘ
LL
StatusDateUserResidueShift
Bad2001-04-01wingcom984E27C6717A70DF8688794
Verified2004-05-25Vojislav PavicB9B469AABABC689B2259712
Verified2004-07-26Ari ÖrnB9B469AABABC689B8786719
History
DateUserTypeResult
2025-02-10yuriy_5-1NF
no factor from 2^74 to 2^75
2024-12-02yuriy_5-1NF
no factor from 2^73 to 2^74
2024-08-06yuriy_5-1NF
no factor from 2^72 to 2^73
2024-05-02yuriy_5-1NF-PM1
B1=12582912, B2=109573764300
2022-12-18Naegi MakotoNF
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
2019-11-18riccardo ubertiNF-PM1
B1=430000, B2=8500000, E=12
2018-01-01ramgeisNF
no factor from 2^68 to 2^69
2018-01-01ramgeisNF
no factor from 2^67 to 2^68
2016-01-30VictordeHollanderNF
no factor from 2^66 to 2^67
2014-12-20NesowaNF
no factor from 2^65 to 2^66
2013-11-04lycornNF
no factor from 2^64 to 2^65