Marin Mersenne 2^P-1
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Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
2477689TF
No factors below 270
TF target 263
TF below 2^73 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 8800000
B2 = 45300145800
ECM
DigitsB1Curves
2550000203 / 280
Estimated T-Level: 23.6 ⓘ
LL
StatusDateUserResidueShift
VerifiedStefan Muth1366728B099457A70
Verified1998-07-21Brian J. Beesley1366728B099457A70
Verified1999-05-30Matthias Müller1366728B099457A72156155
History
DateUserTypeResult
2024-04-05TJAOINF
no factor from 2^69 to 2^70
2023-09-07Sid & AndyNF-PM1
B1=8800000, B2=45300145800
2023-06-01JossNF-PM1
B1=1000000, B2=3645762120
2023-01-01JossNF-PM1
B1=1000000, B2=548467920
2021-06-03TJAOINF
no factor from 2^68 to 2^69
2019-05-27TJAOINF
no factor from 2^67 to 2^68
2017-07-22Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-10-28ramgeisNF
no factor from 2^65 to 2^66
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2014-10-23mikrNF-PM1
B1=2382500, B2=85770100, E=12
2014-09-02JossNF-PM1
B1=120905
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-06-08Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-21Oscar ÖstlinNF-PM1
B1=95000, B2=1947500, E=6
2010-11-20JossNF-PM1
B1=20000
2009-01-14Sturle SundeNF
no factor from 2^60 to 2^61