Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
26478623
Composite: proven not-prime with Lucas-Lehmer test
No factors below 275
TF target 270
P-1
B1 = 600000
B2 = 154081200
LL
StatusDateUserResidueShiftSoftware
Verified2005-10-18EDNY3E87CFB944DE7C002386655Windows,Prime95,v22,NT service,(aka WY5)
Verified2012-06-16Dubslow3E87CFB944DE7C000CUDALucas v2.03
History
DateUserTypeResult
2021-12-18Sid & AndyNF-PM1B1=600000, B2=154081200
2021-10-17TheJudgerNFno factor TF: 74-75
2021-09-30TheJudgerNFno factor TF: 73-74
2021-08-25TheJudgerNFno factor TF: 72-73
2021-08-25TheJudgerNFno factor TF: 71-72
2021-04-30mikrNFno factor TF: 70-71
2017-04-13ramgeisNFno factor TF: 69-70
2012-06-16DubslowC-LL3E87CFB944DE7C00
2011-12-27bcp19NFno factor TF: 68-69
2011-10-23ChuckNFno factor TF: 67-68
2005-10-18-anonymous-C-LL3E87CFB944DE7C00
2004-11-30-anonymous-NF-PM1B1=260000, B2=1235000
2004-10-03ITSNFno factor TF: 1-67
2004-06-04markrNFno factor TF: 1-62