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
50828927Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 273
P-1
B1 = 605000
B2 = 17545000
LL
StatusDateUserResidueShift
Verified2011-06-16curtiscE957EF7E9A89C59A25213817
Verified2019-09-25Zoltan FellegE957EF7E9A89C59A0
History
DateUserTypeResult
2019-09-25Zoltan FellegC-LL
E957EF7E9A89C59A
2018-09-29Mark RoseNF
no factor from 2^73 to 2^74
2016-02-06AirSquirrelsNF
no factor from 2^72 to 2^73
2015-11-23Judge HaleNF
no factor from 2^71 to 2^72
2015-06-18Mark RoseNF
no factor from 2^70 to 2^71
2015-01-23monstNF
no factor from 2^69 to 2^70
2011-06-16curtiscC-LL
E957EF7E9A89C59A
2009-07-06BrightSpotNF
no factor from 2^68 to 2^69
2009-07-04CubeQuest.orgNF
no factor from 2^67 to 2^68
2009-06-28werdwerdusNF-PM1
B1=605000, B2=17545000
2008-11-29Sturle SundeNF
no factor from 2^66 to 2^67
2008-11-27Sturle SundeNF
no factor from 2^65 to 2^66
2008-11-25Sturle SundeNF
no factor from 2^64 to 2^65
2008-09-29DerekNF
no factor to 2^64