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
2762443Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 263
TF below 2^80 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 52486418
B2 = 1284463520340
ECM
DigitsB1Curves
2550000280 / 280
3025000085 / 640
Estimated T-Level: 25.7 ⓘ
LL
StatusDateUserResidueShift
VerifiedDax PratherA596208B76A1CE520
Verified1999-04-13Bill ReaA596208B76A1CE522320837
Verified2018-08-18kkmrkkblmbrbkA596208B76A1CE521126494
History
DateUserTypeResult
2024-11-06yuriy_5-1NF-PM1
B1=52486418, B2=1284463520340
2023-10-06TJAOINF
no factor from 2^69 to 2^70
2023-02-20Architects CubedNF-PM1
B1=5000000, B2=8681331750
2021-06-14TJAOINF
no factor from 2^68 to 2^69
2019-02-21chuenkitNF
no factor from 2^67 to 2^68
2018-08-18kkmrkkblmbrbkC-LL
A596208B76A1CE52
2017-10-09Gordon SpenceNF
no factor from 2^66 to 2^67
2017-02-25JossNF-PM1
B1=294451, B2=2944510, E=6
2017-01-18mikrNF-PM1
B1=2700000, B2=84000000, E=12
2016-12-23JossNF-PM1
B1=204480
2016-08-08JossNF-PM1
B1=142000, B2=4730000, E=6
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-08ramgeisNF
no factor from 2^65 to 2^66
2015-04-21VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-21VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-14dbaughNF
no factor from 2^62 to 2^63
2012-03-17markrNF
no factor from 2^61 to 2^62
2010-12-03markrNF-PM1
B1=110000, B2=2365000, E=6
2009-01-31Sturle SundeNF
no factor from 2^60 to 2^61