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
50731211Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 273
P-1
B1 = 615000
B2 = 20756250
LL
StatusDateUserResidueShift
Verified2011-07-27wuxiaoB3D5140B231FD19348244270
Verified2020-03-10Sergey NosovB3D5140B231FD19342659832
History
DateUserTypeResult
2020-03-10Sergey NosovC-LL
B3D5140B231FD193
2019-06-02TheJudgerNF
no factor from 2^73 to 2^74
2015-12-24AirSquirrelsNF
no factor from 2^72 to 2^73
2015-12-04-Anonymous-NF
no factor from 2^71 to 2^72
2015-06-29Mark RoseNF
no factor from 2^70 to 2^71
2015-01-14monstNF
no factor from 2^69 to 2^70
2011-07-27wuxiaoC-LL
B3D5140B231FD193
2009-01-28tscNF
no factor to 2^69
2009-01-04Sturle SundeNF-PM1
B1=615000, B2=20756250, E=6
2008-12-10David BarleyNF
no factor from 2^66 to 2^67
2008-12-09David BarleyNF
no factor from 2^65 to 2^66
2008-12-08David BarleyNF
no factor from 2^64 to 2^65
2008-09-14DerekNF
no factor to 2^64