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
2422657Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 263
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 9000000
B2 = 46327957830
ECM
DigitsB1Curves
2550000280 / 280
30250000105 / 640
Estimated T-Level: 25.8 ⓘ
LL
StatusDateUserResidueShift
VerifiedJohn Lloyd4114279715608F5E0
Verified1999-03-15Louis Towles4114279715608F5E395782
Verified2018-05-20kkmrkkblmbrbk4114279715608F5E2242988
History
DateUserTypeResult
2023-08-08Sid & AndyNF-PM1
B1=9000000, B2=46327957830
2023-05-29JossNF-PM1
B1=1000000, B2=3380447070
2023-01-01JossNF-PM1
B1=1000000, B2=548467920
2021-01-26Anton RepkoNF
no factor from 2^68 to 2^70
2019-04-29TJAOINF
no factor from 2^67 to 2^68
2018-05-20kkmrkkblmbrbkC-LL
4114279715608F5E
2017-07-05Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-10-23ramgeisNF
no factor from 2^65 to 2^66
2015-02-27VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-27VictordeHollanderNF
no factor from 2^63 to 2^64
2014-04-15mikrNF-PM1
B1=1986400, B2=69524000, E=12
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-06-04Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-23Oscar ÖstlinNF-PM1
B1=95000, B2=1923750, E=6
2010-11-13Oscar ÖstlinNF-PM1
B1=75011
2009-01-14Sturle SundeNF
no factor from 2^60 to 2^61