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
3095971Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 271
TF target 264
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 8900000
B2 = 22808664060
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 640
Estimated T-Level: 25.8 ⓘ
LL
StatusDateUserResidueShift
Verified1998-01-26Gerard Postuma673905DCA3057D020
Verified1999-09-14Pavel Breslavsky673905DCA3057D02936454
History
DateUserTypeResult
2025-07-28Architects CubedNF
no factor from 2^70 to 2^71
2023-02-02Sid & AndyNF-PM1
B1=8900000, B2=22808664060
2022-06-07mikrNF
no factor from 2^69 to 2^70
2021-02-08TJAOINF
no factor from 2^68 to 2^69
2018-08-19ramgeisNF
no factor from 2^67 to 2^68
2018-05-20mikrNF-PM1
B1=3000000, B2=100000000, E=12
2017-05-18Gordon SpenceNF
no factor from 2^66 to 2^67
2016-04-17JossNF-PM1
B1=200000, B2=6167023, E=6
2015-06-11ThaNF
no factor from 2^65 to 2^66
2015-02-07VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-07VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2011-12-06Sid & AndyNF
no factor from 2^61 to 2^62
2011-08-17USAFSSNF-PM1
B1=100000, B2=2125000, E=6
2009-07-03Carsten KossendeyNF-PM1
B1=15000, B2=180000
2009-02-12Sturle SundeNF
no factor from 2^60 to 2^61