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
39749153
Composite: proven not-prime with Lucas-Lehmer test
No factors below 273
TF target 272
P-1
B1 = 405000
B2 = 3341250
LL
StatusDateUserResidueShiftSoftware
Verified2008-03-05Tomasz KordzikowskiDB95B948106AAF2336121363Windows,Prime95,v24 final,(aka Wc1)
Verified2017-04-14DubslowDB95B948106AAF2336708847Linux 64-bit,Prime95,v28.7,build 1
History
DateUserTypeResult
2019-10-11-anonymous-NFno factor TF: 72-73
2019-07-31monstNFno factor TF: 71-72
2017-04-14DubslowC-LLDB95B948106AAF23
2014-12-13Tim SorberaNFno factor TF: 70-71
2014-12-10Mark RoseNFno factor TF: 69-70
2013-09-28Torben K.NFno factor TF: 68-69
2008-03-03Tomek KordzikowskiC-LLDB95B948106AAF23
2007-12-31Tomek KordzikowskiNF-PM1B1=405000, B2=3341250
2006-11-09Matt PerryNFno factor TF: 1-68