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
47001533
Composite: proven not-prime with Lucas-Lehmer test
No factors below 273
TF target 272
P-1
B1 = 615000
B2 = 13991250
LL
StatusDateUserResidueShiftSoftware
Verified2010-11-20Reed_Young8BE8447B9BF4355144823186Linux 64-bit,Prime95,v25.9,build 4
Verified2014-03-01Sebastian Hornbostel8BE8447B9BF435510CUDALucas v2.03
History
DateUserTypeResult
2024-05-12James HeinrichNFno factor TF: 68-69
2017-12-07ktonyNFno factor TF: 72-73
2014-03-01Sebastian HornbostelNFno factor TF: 71-72
2014-03-01Sebastian HornbostelC-LL8BE8447B9BF43551
2012-07-31David CampeauNF-PM1B1=615000, B2=13991250, E=6
2012-06-28David CampeauNFno factor TF: 70-71
2012-06-28David CampeauNFno factor TF: 69-70
2011-09-29Carsten KossendeyNFno factor TF: 68-69
2010-11-20Reed_YoungC-LL8BE8447B9BF43551
2008-03-03JC_HerlesNFno factor TF: 1-68
2006-05-29Clark B. WierdaNFno factor TF: 1-62