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
4332577Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 265
P-1
B1 = 6200000
B2 = 28433170920
ECM
DigitsB1Curves
2550000189 / 280
Estimated T-Level: 23.4 ⓘ
LL
StatusDateUserResidueShift
Verified1998-08-02Brian O'KelleyFEE64C6B6A5834C80
Verified2001-01-21Graeme PopeFEE64C6B6A5834C82625476
History
DateUserTypeResult
2022-11-20DRobinsonPENF-PM1
B1=6200000, B2=28433170920
2022-10-04Kevin_9611NF-PM1
B1=240000, B2=93242310
2021-02-09-Anonymous-NF
no factor from 2^72 to 2^73
2021-01-30-Anonymous-NF
no factor from 2^71 to 2^72
2021-01-30-Anonymous-NF
no factor from 2^70 to 2^71
2021-01-26-Anonymous-NF
no factor from 2^69 to 2^70
2021-01-26-Anonymous-NF
no factor from 2^68 to 2^69
2018-10-25chuenkitNF
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
2016-01-25Squeeky_SquirrelNF-PM1
B1=150000, B2=3637500, E=6
2015-06-16snme2pm1NF
no factor from 2^65 to 2^66
2014-06-07lycornNF
no factor from 2^64 to 2^65
2014-06-07JayderNF
no factor from 2^63 to 2^64
2012-01-14GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-12-17Squeeky_SquirrelNF-PM1
B1=80000, B2=1440000, E=6
2010-12-05markrNF
no factor from 2^61 to 2^62
2009-08-08Carsten KossendeyNF-PM1
B1=25000, B2=343750