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
40158479
Composite: proven not-prime with Lucas-Lehmer test
No factors below 275
TF target 272
P-1
B1 = 1000000
B2 = 20000000
LL
StatusDateUserResidueShiftSoftware
Verified2009-05-03Stephan Grupp6C326D47C564267430903806Windows,Prime95,v24 final,(aka Wc1)
Verified2017-06-22Dubslow6C326D47C564267432859865Linux 64-bit,Prime95,v28.7,build 1
History
DateUserTypeResult
2024-06-14James HeinrichNFno factor TF: 68-69
2021-03-07-anonymous-NFno factor TF: 74-75
2020-12-13Sid & AndyNF-PM1B1=1000000, B2=20000000
2020-01-31-anonymous-NFno factor TF: 73-74
2019-10-04-anonymous-NFno factor TF: 72-73
2017-06-22DubslowC-LL6C326D47C5642674
2014-12-30tigreroarsNFno factor TF: 71-72
2014-12-17NickOfTimeNFno factor TF: 70-71
2014-12-17NickOfTimeNFno factor TF: 69-70
2013-10-24Carsten KossendeyNFno factor TF: 68-69
2009-05-03Stephan GruppC-LL6C326D47C5642674
2008-01-15-anonymous-NF-PM1B1=660000
2007-02-05smintheusNFno factor TF: 1-68
2006-07-10-anonymous-NFno factor TF: 1-62
2002-08-31-anonymous-NFno factor TF: 1-57