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
52559137Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 273
P-1
B1 = 290000
B2 = 5365000
LL
StatusDateUserResidueShift
Verified2011-05-25arnaud31081790085DEE3825892242
Verified2019-05-31d3zorg31081790085DEE3831457815
History
DateUserTypeResult
2019-05-31d3zorgC-LL
31081790085DEE38
2016-02-11AirSquirrelsNF
no factor from 2^72 to 2^73
2015-12-18-Anonymous-NF
no factor from 2^71 to 2^72
2015-09-29LaurVNF
no factor from 2^70 to 2^71
2014-10-26NesowaNF
no factor from 2^69 to 2^70
2011-06-08josiboNF-PM1
B1=290000, B2=5365000
2011-05-25arnaudC-LL
31081790085DEE38
2010-04-01-Anonymous-NF
no factor from 2^68 to 2^69
2009-07-06scuderiaDSNF
no factor from 2^67 to 2^68
2009-06-28scuderiaDSNF
no factor from 2^66 to 2^67
2009-06-26Sturle SundeNF
no factor from 2^65 to 2^66
2008-12-10Sturle SundeNF
no factor from 2^64 to 2^65
2008-11-19DerekNF
no factor to 2^64