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
61052041Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 274
P-1
B1 = 575000
B2 = 11212500
LL
StatusDateUserResidueShift
Verified2013-03-21rick0654FFEF9D54F02237227271
Verified2022-06-04RichD00654FFEF9D54F02260913271
History
DateUserTypeResult
2022-06-04RichD0C-LL
0654FFEF9D54F022
2016-02-25AirSquirrelsNF
no factor from 2^73 to 2^74
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2013-03-21rickC-LL
0654FFEF9D54F022
2013-02-09ixfd64NF-PM1
B1=575000, B2=11212500
2013-01-15BigBrotherNF
no factor from 2^72 to 2^73
2013-01-15BigBrotherNF
no factor from 2^71 to 2^72
2012-10-26Houd Al-ObaidliNF
no factor from 2^70 to 2^71
2012-03-26-Anonymous-NF
no factor from 2^69 to 2^70
2009-07-27Jordi SentmenatNF
no factor from 2^68 to 2^69
2009-04-10ANONYMOUSNF
no factor from 2^67 to 2^68
2009-04-09arnaudNF
no factor from 2^66 to 2^67
2009-04-05arnaudNF
no factor from 2^65 to 2^66
2009-04-04arnaudNF
no factor from 2^64 to 2^65
2009-03-31arnaudNF
no factor from 2^63 to 2^64