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
5551837TF
No factors below 276
TF target 266
P-1
B1 = 8000000
B2 = 5611658910
ECM
DigitsB1Curves
255000013 / 280
Estimated T-Level: 20.2 ⓘ
LL
StatusDateUserResidueShift
VerifiedDavid Baugh0B0443EE1157C7680
Verified2000-08-17Stephen Wood0B0443EE1157C7684161465
History
DateUserTypeResult
2022-10-19Sid & AndyNF-PM1
B1=8000000, B2=5611658910
2020-11-03James HeinrichNF-PM1
B1=260000, B2=7413000, E=12
2020-10-11James HeinrichNF-PM1
B1=260000, B2=7413000, E=12
2016-02-23Mark RoseNF
no factor from 2^1 to 2^62
2014-11-18dbaughNF
no factor from 2^75 to 2^76
2013-12-09dbaughNF
no factor from 2^74 to 2^75
2013-07-19dbaughNF
no factor from 2^73 to 2^74
2013-05-19Squeeky_SquirrelNF-PM1
B1=175000, B2=3937500, E=6
2013-05-06dbaughNF
no factor from 2^72 to 2^73
2013-03-16dbaughNF
no factor from 2^71 to 2^72
2012-12-11dbaughNF
no factor from 2^70 to 2^71
2012-10-19dbaughNF
no factor from 2^69 to 2^70
2012-08-15dbaughNF
no factor from 2^68 to 2^69
2012-08-12dbaughNF
no factor from 2^67 to 2^68
2012-07-11dbaughNF
no factor from 2^66 to 2^67
2012-07-11dbaughNF
no factor from 2^65 to 2^66
2012-07-07dbaughNF
no factor from 2^64 to 2^65
2012-06-27dbaughNF
no factor from 2^63 to 2^64
2010-05-02Squeeky_SquirrelNF-PM1
B1=65000, B2=1121250, E=6
2009-04-23GrunwalderGIMPNF
no factor from 2^62 to 2^63