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
49899973
Composite: proven not-prime with Lucas-Lehmer test
No factors below 275
TF target 273
P-1
B1 = 520000
B2 = 11830000
LL
StatusDateUserResidueShiftSoftware
Bad2002-07-14Paul Victor Novarese3A1213E615D307FA18612707Windows,Prime95,v21,(aka WX1)
Verified2011-09-28twmoss5CC575F167CD1CCC40298170Windows,Prime95,v25.9,build 4
Verified2016-08-17kkmrkkblmbrbk5CC575F167CD1CCC28771580Linux 64-bit,Prime95,v28.9,build 2
History
DateUserTypeResult
2019-12-02Sid & AndyNFno factor TF: 74-75
2019-07-10-anonymous-NFno factor TF: 73-74
2017-09-12Sid & AndyNFno factor TF: 72-73
2016-08-17kkmrkkblmbrbkC-LL5CC575F167CD1CCC
2015-10-25Architects CubedNFno factor TF: 71-72
2015-10-06Sid & AndyNF-PM1B1=520000, B2=11830000, E=12
2015-05-14Mark RoseNFno factor TF: 70-71
2011-09-28twmossC-LL5CC575F167CD1CCC
2006-09-04James HeinrichNF-PM1B1=255000, B2=5227500
2005-04-11James HeinrichNF-PM1B1=255000, B2=5227500
2005-03-20James HeinrichNF-PM1B1=255000, B2=5227500
2002-07-14-anonymous-C-LL3A1213E615D307FA
2001-04-01ANONYMOUSNFno factor TF: 1-70