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
39988591
Composite: proven not-prime with Lucas-Lehmer test
No factors below 274
TF target 272
P-1
B1 = 475000
B2 = 11400000
LL
StatusDateUserResidueShiftSoftware
BadKaliF0B0C29E29A49B3624543724Linux 64-bit,Prime95,v25 beta,(aka Wd8)
BadKaliF0B0C29E29A49B366030108Linux 64-bit,Prime95,v25 beta,(aka Wd8)
Verified2015-06-26MadPoo 🙂DE5981FCF9E95DEA16402332Windows 64-bit,Prime95,v26,(aka We4)
Verified2015-06-27MadPoo 🙂DE5981FCF9E95DEA32371626Windows 64-bit,Prime95,v26,(aka We4)
Verified2015-06-29Architects CubedDE5981FCF9E95DEA8810316Linux 64-bit,Prime95,v27.9,build 1
History
DateUserTypeResult
2020-01-31-anonymous-NFno factor TF: 73-74
2019-10-12-anonymous-NFno factor TF: 72-73
2019-02-10monstNFno factor TF: 71-72
2015-06-29Architects CubedC-LL
DE5981FCF9E95DEA
2015-06-27MadPoo 🙂C-LL
DE5981FCF9E95DEA
2015-06-26MadPoo 🙂C-LL
DE5981FCF9E95DEA
2015-04-08NesowaNFno factor TF: 70-71
2014-12-11monstNFno factor TF: 69-70
2014-01-11Torben K.NFno factor TF: 68-69
2007-09-13KaliNF-PM1B1=475000, B2=11400000
2006-11-28Team Prime RibNFno factor TF: 1-68