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

PrimeNet Exponent Status

Exponent Range:





MnDetails
44768851
Composite: proven not-prime with Lucas-Lehmer test
No factors below 274
TF target 272
P-1
B1 = 1000000
B2 = 20000000
LL
StatusDateUserResidueShiftSoftware
Bad2009-06-02WWU-CS1518C268EE82CE8730566798Linux 32-bit,Prime95,v24 final,(aka Wc2)
Verified2009-07-12linded3A9DAB6E612F63441766725Windows,Prime95,v25.8,build 5
Verified2016-10-24Mark Rose3A9DAB6E612F634428768469Linux 64-bit,Prime95,v28.9,build 2
History
DateUserTypeResult
2024-06-20James HeinrichNFno factor TF: 69-70
2019-11-17Sid & AndyNFno factor TF: 73-74
2019-09-02Sid & AndyNF-PM1B1=1000000, B2=20000000, E=6
2018-08-03-anonymous-NFno factor TF: 72-73
2016-10-24Mark RoseC-LL3A9DAB6E612F6344
2015-08-09GregNFno factor TF: 70-72
2015-08-04Carsten KossendeyNFno factor TF: 69-70
2014-07-03NRNFno factor TF: 68-69
2009-07-12lindedC-LL3A9DAB6E612F6344
2009-06-02WWU-CSC-LL1518C268EE82CE87
2009-04-22WWU-CSNF-PM1B1=755000
2007-11-17Team Prime RibNFno factor TF: 1-68