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
4374677Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 265
TF below 2^80 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 6200000
B2 = 32756371830
ECM
DigitsB1Curves
2550000280 / 280
3025000059 / 640
Estimated T-Level: 25.5 ⓘ
LL
StatusDateUserResidueShift
Verified1998-03-17Johannes Stahl814DE05854B35EF00
Verified2000-01-25Eric Bravick814DE05854B35EF01052403
History
DateUserTypeResult
2022-12-20DRobinsonPENF-PM1
B1=6200000, B2=32756371830
2022-10-08Kevin_9611NF-PM1
B1=240000, B2=102398010
2021-02-10-Anonymous-NF
no factor from 2^72 to 2^73
2021-01-29-Anonymous-NF
no factor from 2^71 to 2^72
2021-01-29-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
2018-10-29chuenkitNF
no factor from 2^67 to 2^68
2018-05-03chuenkitNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^61 to 2^63
2015-06-19snme2pm1NF
no factor from 2^65 to 2^66
2014-07-14lycornNF
no factor from 2^64 to 2^65
2014-07-14JayderNF
no factor from 2^63 to 2^64
2013-09-20Squeeky_SquirrelNF-PM1
B1=150000, B2=3675000, E=6
2012-01-19GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-07-05USAFSSNF-PM1
B1=50000, B2=775000, E=6
2009-07-31Carsten KossendeyNF-PM1
B1=20000, B2=280000