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
81686993
Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime
No factors below 275
TF target 275
P-1
B1 = 695000
B2 = 14247500
LL
StatusDateUserResidueShiftSoftware
Unverified2018-05-22patgie159BC9F9953586__13042037Windows 64-bit,Prime95,v29.4,(aka Wg4)
History
DateUserTypeResult
2018-05-22patgieC-LL159BC9F9953586__
2017-06-04TheJudgerNF-PM1B1=695000, B2=14247500, E=12
2016-11-06TheJudgerNFno factor TF: 74-75
2016-11-06TheJudgerNFno factor TF: 73-74
2013-02-03SWL551NFno factor TF: 72-73
2013-02-03SWL551NFno factor TF: 71-72
2013-02-03SWL551NFno factor TF: 70-71
2013-02-03SWL551NFno factor TF: 69-70
2013-02-03SWL551NFno factor TF: 68-69
2013-02-03SWL551NFno factor TF: 67-68
2013-01-30phoenicisNFno factor TF: 66-67
2012-08-13Carsten KossendeyNFno factor TF: 65-66
2010-12-15Architects CubedNFno factor TF: 64-65