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
45271279
Composite: proven not-prime with Lucas-Lehmer test
No factors below 274
TF target 272
P-1
B1 = 1000000
B2 = 20000000
LL
StatusDateUserResidueShiftSoftware
Verified2011-04-14-anonymous-FAF2EC9BE3E8CB4527853612Windows,Prime95,v24 final,(aka Wc1)
Bad2017-02-12ANONYMOUS73E05F60C0A5667033407187Windows 64-bit,Prime95,v28.10,build 1
Verified2017-06-20MadPoo 🙂FAF2EC9BE3E8CB4535591948Windows 64-bit,Prime95,v26,(aka We4)
History
DateUserTypeResult
2024-05-19Naegi MakotoNFno factor TF: 69-70
2019-05-06Sid & AndyNFno factor TF: 73-74
2019-03-17Sid & AndyNF-PM1B1=1000000, B2=20000000, E=6
2018-02-24-anonymous-NFno factor TF: 72-73
2017-06-20MadPoo 🙂C-LL
FAF2EC9BE3E8CB45
2017-02-12ANONYMOUSC-LL
73E05F60C0A56670
2015-11-06-anonymous-NFno factor TF: 71-72
2015-11-06-anonymous-NFno factor TF: 70-71
2015-09-04Carsten KossendeyNFno factor TF: 69-70
2014-08-07VictordeHollanderNFno factor TF: 68-69
2011-04-14-anonymous-C-LL
FAF2EC9BE3E8CB45
2010-05-29ANONYMOUSNF-PM1B1=765000
2007-12-18ITSNFno factor TF: 1-68
2007-01-161997rj7NFno factor TF: 1-63