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
44771917
Composite: proven not-prime with Lucas-Lehmer test
No factors below 274
TF target 272
P-1
B1 = 540000
B2 = 14985000
LL
StatusDateUserResidueShiftSoftware
Bad2009-08-14Will Wilkinson270A20D70999B11533856620Windows 64-bit,Prime95,v25.9,build 4
Verified2015-11-17endless_mikeA18E010238895BAD7964214Windows 64-bit,Prime95,v28.7,build 1
Verified2016-10-29Mark RoseA18E010238895BAD28214618Linux 64-bit,Prime95,v28.9,build 2
History
DateUserTypeResult
2024-06-20James HeinrichNFno factor TF: 69-70
2019-11-16Sid & AndyNFno factor TF: 73-74
2018-08-04-anonymous-NFno factor TF: 72-73
2016-10-29Mark RoseC-LLA18E010238895BAD
2016-02-23Mark RoseNFno factor TF: 1-63
2015-11-17endless_mikeC-LLA18E010238895BAD
2015-10-09JCNFno factor TF: 71-72
2015-10-09JCNFno factor TF: 70-71
2015-08-04Carsten KossendeyNFno factor TF: 69-70
2014-07-07NRNFno factor TF: 68-69
2009-08-14Will WilkinsonC-LL270A20D70999B115
2009-06-15Will WilkinsonNF-PM1B1=540000, B2=14985000
2007-10-29Team Prime RibNFno factor TF: 65-66
2007-10-29Team Prime RibNFno factor TF: 67-68
2007-10-29Team Prime RibNFno factor TF: 64-65
2007-10-29Team Prime RibNFno factor TF: 63-64
2007-10-29Team Prime RibNFno factor TF: 66-67