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
2738149Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 263
TF below 2^75 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 10000000
B2 = 10050107760
ECM
DigitsB1Curves
2550000231 / 280
Estimated T-Level: 24.1 ⓘ
LL
StatusDateUserResidueShift
VerifiedMichael B. ClarkE726C53D5542CC720
Verified1999-08-22Leonid PapirovE726C53D5542CC72911707
Verified2018-08-10kkmrkkblmbrbkE726C53D5542CC722437339
History
DateUserTypeResult
2025-05-15JossNF-PM1
B1=10000000, B2=10050107760
2024-01-04NumberwangNF-PM1
B1=258000, B2=1283160060
2023-11-17TJAOINF
no factor from 2^69 to 2^70
2023-03-15Architects CubedNF-PM1
B1=5000000, B2=8681331750
2023-01-26JossNF-PM1
B1=1000000, B2=457236780
2021-07-26TJAOINF
no factor from 2^68 to 2^69
2021-02-17NumberwangNF-PM1
B1=143000, B2=4507000, E=6
2019-02-15chuenkitNF
no factor from 2^67 to 2^68
2018-08-10kkmrkkblmbrbkC-LL
E726C53D5542CC72
2017-10-05Gordon SpenceNF
no factor from 2^66 to 2^67
2016-10-25mikrNF-PM1
B1=2700000, B2=84000000, E=12
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-03ramgeisNF
no factor from 2^65 to 2^66
2015-04-13VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-13VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-14dbaughNF
no factor from 2^62 to 2^63
2012-04-09Grant McCrackenNF
no factor from 2^61 to 2^62
2011-04-27James HeinrichNF-PM1
B1=185000, B2=4625000, E=6
2011-01-20JossNF-PM1
B1=50000
2010-12-29JossNF-PM1
B1=30000
2010-12-19JossNF-PM1
B1=20000
2009-01-28Sturle SundeNF
no factor from 2^60 to 2^61