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
44763937
Composite: proven not-prime with Lucas-Lehmer test
No factors below 274
TF target 272
P-1
B1 = 1000000
B2 = 20000000
LL
StatusDateUserResidueShiftSoftware
Bad2009-09-19ANONYMOUS1AA76C5192FC9AE519720394Windows,Prime95,v25.8,build 5
Verified2009-11-16WR99EB5A28C25A7F6A7597687Linux 64-bit,Prime95,v25.9,build 4
Verified2016-09-26Mark Rose99EB5A28C25A7F6A11786314Linux 64-bit,Prime95,v28.9,build 2
History
DateUserTypeResult
2024-06-20James HeinrichNFno factor TF: 69-70
2019-11-18Sid & AndyNFno factor TF: 73-74
2019-07-28Sid & AndyNF-PM1B1=1000000, B2=20000000, E=6
2018-08-02-anonymous-NFno factor TF: 72-73
2016-09-26Mark RoseC-LL99EB5A28C25A7F6A
2015-08-09GregNFno factor TF: 70-72
2015-08-04Carsten KossendeyNFno factor TF: 69-70
2014-07-02NRNFno factor TF: 68-69
2009-11-16WRC-LL99EB5A28C25A7F6A
2009-09-19ANONYMOUSC-LL1AA76C5192FC9AE5
2009-07-01ANONYMOUSNF-PM1B1=755000
2007-11-17-anonymous-NFno factor TF: 1-68