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
41229379Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 272
P-1
B1 = 400000
B2 = 2100000
LL
StatusDateUserResidueShift
Verified2009-07-14Stephan Grupp7A3A8B960F62C09C30929843
Verified2017-06-11Sergey Nosov7A3A8B960F62C09C14365795
History
DateUserTypeResult
2022-05-08Sid & AndyNF
no factor from 2^72 to 2^73
2017-06-11Sergey NosovC-LL
7A3A8B960F62C09C
2015-07-19tigreroarsNF
no factor from 2^71 to 2^72
2015-01-06chalsallNF
no factor from 2^70 to 2^71
2014-12-31chalsallNF
no factor from 2^69 to 2^70
2013-12-06bayanneNF
no factor from 2^68 to 2^69
2009-07-14Stephan GruppC-LL
7A3A8B960F62C09C
2009-05-10Stephan GruppNF-PM1
B1=400000, B2=2100000