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

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Exponent Range:










MnStatusDetails
1569181TF
No factors below 268
TF target 261
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 19300000
B2 = 98950575570
ECM
DigitsB1Curves
2550000280 / 280
30250000105 / 640
Estimated T-Level: 25.8 ⓘ
LL
StatusDateUserResidueShift
VerifiedChristopher Stoner8161B472596AF4760
Verified1999-02-14Louis Towles8161B472596AF476236585
Verified2015-06-28MadPoo8161B472596AF476757489
History
DateUserTypeResult
2023-10-19Sid & AndyNF-PM1
B1=19300000, B2=98950575570
2023-05-15JossNF-PM1
B1=10001000, B2=8289448440
2023-02-28JossNF-PM1
B1=10001000, B2=3563469000
2023-01-02JossNF-PM1
B1=10001000, B2=1200523170
2018-06-08ramgeisNF
no factor from 2^67 to 2^68
2018-01-15TJAOINF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-10-11ramgeisNF
no factor from 2^65 to 2^66
2015-06-28MadPooC-LL
8161B472596AF476
2015-04-05VictordeHollanderNF-PM1
B1=10000000, B2=200000000, E=12
2015-02-24snme2pm1NF
no factor from 2^64 to 2^65
2015-02-24snme2pm1NF
no factor from 2^63 to 2^64
2013-11-24David CampeauNF-PM1
B1=950000, B2=27550000, E=12
2011-01-30James HeinrichNF-PM1
B1=80000, B2=1380000, E=6
2010-05-24GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-05-03Architects CubedNF
no factor from 2^60 to 2^61