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
52846231Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 273
P-1
B1 = 580000
B2 = 9570000
LL
StatusDateUserResidueShift
Verified2011-06-24GnorfeFC9CB2CCE599C07A32256974
Verified2020-05-19Sergey NosovFC9CB2CCE599C07A45075027
History
DateUserTypeResult
2020-05-19Sergey NosovC-LL
FC9CB2CCE599C07A
2019-07-12Jon PaceNF
no factor from 2^73 to 2^74
2016-02-05AirSquirrelsNF
no factor from 2^72 to 2^73
2015-12-23-Anonymous-NF
no factor from 2^71 to 2^72
2015-09-25LaurVNF
no factor from 2^70 to 2^71
2014-10-11NesowaNF
no factor from 2^69 to 2^70
2011-06-24GnorfeC-LL
FC9CB2CCE599C07A
2011-04-21GnorfeNF-PM1
B1=580000, B2=9570000
2010-04-07SuperbobNF
no factor from 2^68 to 2^69
2009-04-28ANONYMOUSNF
no factor from 2^67 to 2^68
2009-02-17David BarleyNF
no factor from 2^66 to 2^67
2009-02-15David BarleyNF
no factor from 2^65 to 2^66
2009-02-13David BarleyNF
no factor from 2^64 to 2^65
2008-11-29DerekNF
no factor to 2^64