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
47867431Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 272
P-1
B1 = 530000
B2 = 9672500
LL
StatusDateUserResidueShift
Verified2010-02-08curtiscD4520BEA25C5A2706958969
Verified2019-03-13Sergey NosovD4520BEA25C5A27040890786
History
DateUserTypeResult
2019-09-17Jon PaceNF
no factor from 2^73 to 2^74
2019-03-13Sergey NosovC-LL
D4520BEA25C5A270
2018-01-04JCNF
no factor from 2^72 to 2^73
2015-12-06AirSquirrelsNF
no factor from 2^71 to 2^72
2015-12-06AirSquirrelsNF
no factor from 2^70 to 2^71
2015-08-29Sid & AndyNF
no factor from 2^69 to 2^70
2010-02-08curtiscC-LL
D4520BEA25C5A270
2008-12-30Smok_bmv NF-PM1
B1=530000, B2=9672500