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:





MnDetails
68383849
Composite: proven not-prime with Lucas-Lehmer test
No factors below 275
TF target 274
P-1
B1 = 645000
B2 = 15802500
LL
StatusDateUserResidueShiftSoftware
Verified2016-02-03Kyle Z Schmidt322703B051A5F91E25839958Windows 64-bit,Prime95,v28.5,build 2
Verified2023-08-10Ryan Propper322703B051A5F91E23873226Linux 64-bit,Prime95,v30.7,build 9
History
DateUserTypeResult
2023-08-10Ryan PropperC-LL322703B051A5F91E
2016-02-03Kyle Z SchmidtC-LL322703B051A5F91E
2016-01-07Judge HaleNFno factor TF: 74-75
2014-09-05Craig MeyersNF-PM1B1=645000, B2=15802500, E=4
2014-08-24TheJudgerNFno factor TF: 73-74
2014-08-24TheJudgerNFno factor TF: 72-73
2014-07-22RichD0NFno factor TF: 71-72
2012-07-26SWL551NFno factor TF: 70-71
2012-03-07dslNFno factor TF: 69-70
2010-03-05cnaTb_xo4yNFno factor TF: 68-69
2010-01-27tmorrowNFno factor TF: 67-68
2010-01-23tmorrowNFno factor TF: 66-67
2010-01-16RUSSIA_PISFUNFno factor TF: 65-66
2010-01-15RUSSIA_PISFUNFno factor TF: 64-65
2009-01-191997rj7NFno factor TF: 1-64