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

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Exponent Range:










MnStatusDetails
2596897TF
No factors below 270
TF target 263
TF below 2^72 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 5000000
B2 = 8646469650
ECM
DigitsB1Curves
2550000172 / 280
Estimated T-Level: 23.1 ⓘ
LL
StatusDateUserResidueShift
Verified1998-02-12Robert R. Fenichel6FBED1CD3ABF184F0
Verified1999-08-07Lee Sau Dan6FBED1CD3ABF184F0
Verified1999-12-23Tacorama6FBED1CD3ABF184F101166
History
DateUserTypeResult
2024-03-15TJAOINF
no factor from 2^69 to 2^70
2023-01-23Architects CubedNF-PM1
B1=5000000, B2=8646469650
2021-05-27TJAOINF
no factor from 2^68 to 2^69
2019-03-25TJAOINF
no factor from 2^67 to 2^68
2017-08-21Gordon SpenceNF
no factor from 2^66 to 2^67
2016-08-25mikrNF-PM1
B1=3200000, B2=112000000, E=12
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-11-08ramgeisNF
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
2013-01-14dbaughNF
no factor from 2^62 to 2^63
2012-06-23Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-04-18James HeinrichNF-PM1
B1=175000, B2=4156250, E=6
2011-01-15JossNF-PM1
B1=50000
2010-11-16JossNF-PM1
B1=20000
2009-01-29Sturle SundeNF
no factor from 2^60 to 2^61