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
48062081
Composite: proven not-prime with Lucas-Lehmer test
No factors below 273
TF target 272
P-1
B1 = 750000
B2 = 750000
LL
StatusDateUserResidueShiftSoftware
Bad2010-05-07-anonymous-5DAB5409D4730FBA25267594Windows 64-bit,Prime95,v25.7,build 4
Verified2011-09-06curtisc5E60543CF0CDDB4E11234573Windows Service,Prime95,v26.5,build 5
Verified2016-08-29AirSquirrels5E60543CF0CDDB4E0clLucas v1.04
History
DateUserTypeResult
2017-12-15Sid & AndyNFno factor TF: 72-73
2016-08-29AirSquirrelsC-LL5E60543CF0CDDB4E
2015-08-16Sid & AndyNFno factor TF: 71-72
2015-08-09Mark RoseNFno factor TF: 70-71
2015-07-25Sid & AndyNFno factor TF: 69-70
2011-09-06curtiscC-LL5E60543CF0CDDB4E
2010-05-07-anonymous-C-LL5DAB5409D4730FBA
2008-12-03ANONYMOUSNF-PM1B1=750000
2008-07-25-anonymous-NFno factor TF: 1-69
2003-10-08Thomas MullenNFno factor TF: 1-60
2003-06-09Thomas MullenNFno factor TF: 1-59