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
49757107
Composite: proven not-prime with Lucas-Lehmer test
No factors below 273
TF target 273
P-1
B1 = 550000
B2 = 13750000
LL
StatusDateUserResidueShiftSoftware
Verified2012-02-16curtisc07EC7C37346EF75A19161902Windows Service,Prime95,v26.5,build 5
Verified2019-12-22Dubslow07EC7C37346EF75A12455969Linux 64-bit,Prime95,v29.8,build 6
History
DateUserTypeResult
2019-12-22DubslowC-LL07EC7C37346EF75A
2016-05-14Bruno VictalNF-PM1B1=550000, B2=13750000, E=12
2016-05-11Bruno VictalNFno factor TF: 72-73
2012-02-16curtiscC-LL07EC7C37346EF75A
2012-01-07Craig MeyersNFno factor TF: 70-72
2010-02-12JamesNF-PM1B1=720000
2008-08-26-anonymous-NFno factor TF: 1-70