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:










MnStatusDetails
47196979Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 272
P-1
B1 = 560000
B2 = 17360000
LL
StatusDateUserResidueShift
Verified2011-10-18andris.attack67F9FA74D5CDFFA840724358
Verified2018-07-31Smok_bmv 67F9FA74D5CDFFA840416245
History
DateUserTypeResult
2019-04-07Sid & AndyNF
no factor from 2^73 to 2^74
2018-07-31Smok_bmv C-LL
67F9FA74D5CDFFA8
2017-11-26TheJudgerNF
no factor from 2^72 to 2^73
2015-12-12AirSquirrelsNF
no factor from 2^71 to 2^72
2015-12-12AirSquirrelsNF
no factor from 2^70 to 2^71
2015-07-08Sid & AndyNF
no factor from 2^69 to 2^70
2013-10-13Le ComteNF
no factor from 2^68 to 2^69
2011-10-18andris.attackC-LL
67F9FA74D5CDFFA8
2009-09-08MCASNF-PM1
B1=560000, B2=17360000