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
52861261Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 273
P-1
B1 = 625000
B2 = 18125000
LL
StatusDateUserResidueShift
Verified2011-05-09Nick Thorpe230DEDC6B18AA97628424101
Verified2020-05-19Sergey Nosov230DEDC6B18AA9763131549
History
DateUserTypeResult
2020-05-19Sergey NosovC-LL
230DEDC6B18AA976
2019-07-06-Anonymous-NF
no factor from 2^73 to 2^74
2016-02-10AirSquirrelsNF
no factor from 2^72 to 2^73
2015-12-24-Anonymous-NF
no factor from 2^71 to 2^72
2015-09-24LaurVNF
no factor from 2^70 to 2^71
2014-10-11NesowaNF
no factor from 2^69 to 2^70
2011-05-09Nick ThorpeC-LL
230DEDC6B18AA976
2010-07-29oddveryoddNF
no factor from 2^68 to 2^69
2010-07-28exhoppNF-PM1
B1=625000, B2=18125000
2009-06-24Sturle SundeNF
no factor from 2^67 to 2^68
2008-12-22BranMuffinNF
no factor from 2^66 to 2^67
2008-12-18BranMuffinNF
no factor from 2^65 to 2^66
2008-12-16BranMuffinNF
no factor from 2^64 to 2^65
2008-11-30DerekNF
no factor to 2^64