Marin Mersenne 2^P-1
Username
Password
Forgot password?
Blue
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
57263243Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 273
P-1
B1 = 575000
B2 = 12506250
LL
StatusDateUserResidueShift
Verified2012-09-28curtisc3B446FA6A8BAB8FE44681042
Verified2020-07-28-Anonymous-3B446FA6A8BAB8FE12706667
History
DateUserTypeResult
2020-07-28-Anonymous-C-LL
3B446FA6A8BAB8FE
2019-02-03TheJudgerNF
no factor from 2^73 to 2^74
2016-02-23Mark RoseNF
no factor from 2^60 to 2^63
2015-12-22Mark RoseNF
no factor from 2^72 to 2^73
2012-09-28curtiscC-LL
3B446FA6A8BAB8FE
2012-06-14GrunwalderGIMPNF-PM1
B1=575000, B2=12506250
2012-06-05bcp19NF
no factor from 2^71 to 2^72
2011-06-17shaugeNF
no factor from 2^70 to 2^71
2011-06-17shaugeNF
no factor from 2^69 to 2^70
2011-04-26PrimeCruncherNF
no factor from 2^68 to 2^69
2009-08-05Choi4KANGNF
no factor from 2^67 to 2^68
2008-09-25Andreas JantosNF
no factor from 2^66 to 2^67
2008-09-23NumberwangNF
no factor from 2^65 to 2^66
2008-09-23NumberwangNF
no factor from 2^64 to 2^65
2008-09-22ThaNF
no factor from 2^63 to 2^64