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
38359549
Composite: proven not-prime with Lucas-Lehmer test
No factors below 273
TF target 272
P-1
B1 = 455000
B2 = 11375000
LL
StatusDateUserResidueShiftSoftware
Verified2010-05-13PVasilev1B80638EE942EE8923792873Linux 32-bit,Prime95,v25.9,build 4
Verified2016-12-19Dubslow1B80638EE942EE8934240679Linux 64-bit,Prime95,v28.7,build 1
History
DateUserTypeResult
2019-05-27Sid & AndyNFno factor TF: 72-73
2019-02-14monstNFno factor TF: 71-72
2016-12-19DubslowC-LL1B80638EE942EE89
2014-12-24Mark RoseNFno factor TF: 70-71
2014-12-24Mark RoseNFno factor TF: 69-70
2013-08-16krackerNFno factor TF: 68-69
2010-05-13PVasilevC-LL1B80638EE942EE89
2010-04-13PVasilevNF-PM1B1=455000, B2=11375000
2006-07-10Team Prime RibNFno factor TF: 1-68
2003-09-14-anonymous-NFno factor TF: 1-59
2003-09-09-anonymous-NFno factor TF: 1-60