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
4305619Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 265
TF below 2^75 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 13700000
B2 = 81163845840
ECM
DigitsB1Curves
2550000224 / 280
Estimated T-Level: 24.0 ⓘ
LL
StatusDateUserResidueShift
Verified1998-06-01Julien LAMYE7418E0FAE7DF26B0
Verified2000-03-01Gary NovosielskiE7418E0FAE7DF26B1466995
History
DateUserTypeResult
2022-09-23DRobinsonPENF-PM1
B1=13700000, B2=81163845840
2021-02-09-Anonymous-NF
no factor from 2^72 to 2^73
2021-01-28-Anonymous-NF
no factor from 2^71 to 2^72
2021-01-28-Anonymous-NF
no factor from 2^70 to 2^71
2021-01-25-Anonymous-NF
no factor from 2^69 to 2^70
2021-01-25-Anonymous-NF
no factor from 2^68 to 2^69
2020-12-29Dylan DelgadoNF-PM1
B1=2000000, B2=40000000
2018-10-19chuenkitNF
no factor from 2^67 to 2^68
2018-04-30chuenkitNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-06-14snme2pm1NF
no factor from 2^65 to 2^66
2014-05-13lycornNF
no factor from 2^64 to 2^65
2014-05-10JayderNF
no factor from 2^63 to 2^64
2013-08-22Squeeky_SquirrelNF-PM1
B1=130000, B2=2632500, E=6
2012-01-08GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-08-29USAFSSNF-PM1
B1=50000, B2=775000, E=6
2010-12-13markrNF
no factor from 2^61 to 2^62
2009-07-27Carsten KossendeyNF-PM1
B1=25000, B2=337500