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
50538661Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 273
P-1
B1 = 815000
B2 = 815000
LL
StatusDateUserResidueShift
Verified2010-12-06-Anonymous-3B77AF405CCB72324348956
Verified2020-01-25Sergey Nosov3B77AF405CCB723246612551
History
DateUserTypeResult
2020-01-25Sergey NosovC-LL
3B77AF405CCB7232
2019-06-02TheJudgerNF
no factor from 2^73 to 2^74
2015-12-21AirSquirrelsNF
no factor from 2^72 to 2^73
2015-11-08Judge HaleNF
no factor from 2^71 to 2^72
2015-11-08Judge HaleNF
no factor from 2^70 to 2^71
2014-12-25monstNF
no factor from 2^69 to 2^70
2010-12-06-Anonymous-C-LL
3B77AF405CCB7232
2010-05-24-Anonymous-NF-PM1
B1=815000
2008-08-28DerekNF
no factor to 2^64