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
2371961Composite: 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 = 14300000
B2 = 36723209250
ECM
DigitsB1Curves
2550000280 / 280
3025000087 / 640
Estimated T-Level: 25.7 ⓘ
LL
StatusDateUserResidueShift
VerifiedPeter Marksteiner0AA40FBD4B67BEA50
Verified1999-03-01Carl Mikkelsen0AA40FBD4B67BEA51794073
Verified2018-05-13kkmrkkblmbrbk0AA40FBD4B67BEA5434438
History
DateUserTypeResult
2024-04-19TJAOINF
no factor from 2^69 to 2^70
2023-06-13Sid & AndyNF-PM1
B1=14300000, B2=36723209250
2023-03-22JossNF-PM1
B1=1000000, B2=1647746100
2023-03-03JossNF-PM1
B1=1000000, B2=571651080
2021-06-17TJAOINF
no factor from 2^68 to 2^69
2019-04-08TJAOINF
no factor from 2^67 to 2^68
2018-05-13kkmrkkblmbrbkC-LL
0AA40FBD4B67BEA5
2018-02-08Sid & AndyNF-PM1
B1=6000000, B2=180000000, E=12
2017-06-16Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-10-30ramgeisNF
no factor from 2^65 to 2^66
2015-03-09VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-09VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-05-31Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-02-12BudNF-PM1
B1=500000, B2=10000000, E=12
2009-01-16Sturle SundeNF
no factor from 2^60 to 2^61