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
52815121Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 273
P-1
B1 = 520000
B2 = 10790000
LL
StatusDateUserResidueShift
Verified2013-04-25curtisc28EC4D339B36379B51805663
Verified2020-03-03Smok_bmv 28EC4D339B36379B10651670
History
DateUserTypeResult
2020-03-03Smok_bmv C-LL
28EC4D339B36379B
2019-07-06-Anonymous-NF
no factor from 2^73 to 2^74
2016-01-19AirSquirrelsNF
no factor from 2^72 to 2^73
2013-04-25curtiscC-LL
28EC4D339B36379B
2012-03-09delta_tNF-PM1
B1=520000, B2=10790000, E=6
2011-12-14megavinkNF
no factor from 2^71 to 2^72
2011-12-14megavinkNF
no factor from 2^70 to 2^71
2011-11-11Kyle AskineNF
no factor from 2^69 to 2^70
2010-03-28sannerud.comNF
no factor from 2^68 to 2^69
2009-04-26Bruce AndersonNF
no factor from 2^67 to 2^68
2008-12-21James HintzNF
no factor from 2^66 to 2^67
2008-12-18James HintzNF
no factor from 2^65 to 2^66
2008-12-17Kyle JohnsonNF
no factor from 2^64 to 2^65
2008-11-28DerekNF
no factor to 2^64