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
26448743
Composite: proven not-prime with Lucas-Lehmer test
No factors below 275
TF target 270
P-1
B1 = 600000
B2 = 154081200
LL
StatusDateUserResidueShiftSoftware
Verified2004-12-23Kesley K. KimmellEB125DA6059EC66D16776508Windows,Prime95,v23,(aka WZ1)
Verified2012-06-29DubslowEB125DA6059EC66D0CUDALucas v2.04 Beta
History
DateUserTypeResult
2021-12-13Sid & 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
2021-04-28mikrNFno factor TF: 70-71
2017-04-12ramgeisNFno factor TF: 69-70
2012-06-29DubslowC-LLEB125DA6059EC66D
2011-12-26bcp19NFno factor TF: 68-69
2011-10-22ChuckNFno factor TF: 67-68
2004-12-23-anonymous-C-LLEB125DA6059EC66D
2004-11-22-anonymous-NF-PM1B1=405000
2004-09-02-anonymous-NFno factor TF: 1-67
2004-05-25markrNFno factor TF: 1-62