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
3915503Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 271
TF target 264
P-1
B1 = 5200000
B2 = 16049353320
ECM
DigitsB1Curves
2550000130 / 280
Estimated T-Level: 22.3 ⓘ
LL
StatusDateUserResidueShift
Verified1998-03-17Luigi LenguitoEC5A47CFD3E6C5250
Verified2000-05-31Binary DigitsEC5A47CFD3E6C525513199
History
DateUserTypeResult
2023-07-01Sid & AndyNF-PM1
B1=5200000, B2=16049353320
2023-02-12JossNF-PM1
B1=1000000, B2=264622050
2022-10-30JossNF-PM1
B1=1000000, B2=130364850
2022-04-28JossNF-PM1
B1=500000, B2=130364850
2021-11-18Aaron HavilandNF-PM1
B1=500000, B2=15000000, e=12
2021-06-09-Anonymous-NF
no factor from 2^70 to 2^71
2021-04-18axnNF
no factor from 2^69 to 2^70
2020-05-22TJAOINF
no factor from 2^68 to 2^69
2019-01-11YxinityNF
no factor from 2^67 to 2^68
2016-12-03Gordon SpenceNF
no factor from 2^66 to 2^67
2016-04-08JossNF-PM1
B1=228096, B2=4105728, E=6
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-11ramgeisNF
no factor from 2^65 to 2^66
2015-01-14VictordeHollanderNF
no factor from 2^64 to 2^65
2015-01-14VictordeHollanderNF
no factor from 2^63 to 2^64
2014-11-03JossNF-PM1
B1=86392
2012-02-10GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-10-04Squeeky_SquirrelNF-PM1
B1=70000, B2=1172500, E=6
2011-02-17Grant McCrackenNF
no factor from 2^61 to 2^62
2009-02-23S485122NF
no factor from 2^60 to 2^61