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
11642243Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 268
P-1
B1 = 14017262
B2 = 124183569510
ECM
DigitsB1Curves
2550000196 / 280
Estimated T-Level: 23.5 ⓘ
LL
StatusDateUserResidueShift
Verified2000-12-31Charles Dorian44EF5D887674BD9E10626116
Verified2004-03-26Marc Getty / Phil Fizur44EF5D887674BD9E3597797
History
DateUserTypeResult
2025-03-12yuriy_5-1NF
no factor from 2^74 to 2^75
2024-12-06yuriy_5-1NF
no factor from 2^73 to 2^74
2024-08-16yuriy_5-1NF
no factor from 2^72 to 2^73
2024-06-07yuriy_5-1NF-PM1
B1=14017262, B2=124183569510
2022-12-04Naegi MakotoNF
no factor from 2^71 to 2^72
2021-08-23LaurVNF-PM1
B1=6189107, B2=185673210
2021-08-15SRBaseNF
no factor from 2^70 to 2^71
2021-08-07SRBaseNF
no factor from 2^69 to 2^70
2019-12-16riccardo ubertiNF-PM1
B1=430000, B2=8500000, E=12
2018-01-15ramgeisNF
no factor from 2^68 to 2^69
2018-01-15ramgeisNF
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