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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
28732889Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 270
P-1
B1 = 621000
B2 = 31493000
LL
StatusDateUserResidueShift
Verified2006-03-01Ivan ClarkeE4AB78CDEF9A055423052746
Verified2012-03-14-Anonymous-E4AB78CDEF9A05547927910
History
DateUserTypeResult
2024-05-12James HeinrichNF
no factor from 2^68 to 2^69
2021-03-29Architects CubedNF-PM1
B1=621000, B2=31493000
2021-03-26Sid & AndyNF
no factor from 2^72 to 2^73
2021-03-26Sid & AndyNF
no factor from 2^71 to 2^72
2021-01-26mikrNF
no factor from 2^70 to 2^71
2017-04-07ramgeisNF
no factor from 2^69 to 2^70
2012-03-14-Anonymous-C-LL
E4AB78CDEF9A0554
2011-10-07Carsten KossendeyNF
no factor from 2^68 to 2^69