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
50487193Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 273
P-1
B1 = 1000000
B2 = 22000000
LL
StatusDateUserResidueShift
Verified2011-08-05curtisc7385CA9A3AFDD53148895435
Verified2018-04-18-Anonymous-7385CA9A3AFDD53137174921
History
DateUserTypeResult
2020-03-04riccardo ubertiNF-PM1
B1=1000000, B2=22000000, E=12
2018-04-18-Anonymous-C-LL
7385CA9A3AFDD531
2015-12-26AirSquirrelsNF
no factor from 2^72 to 2^73
2015-12-04-Anonymous-NF
no factor from 2^71 to 2^72
2015-10-18Sid & AndyNF
no factor from 2^70 to 2^71
2011-08-05curtiscC-LL
7385CA9A3AFDD531
2010-12-02ANONYMOUSNF-PM1
B1=730000