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
55731157Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 273
P-1
B1 = 555000
B2 = 11932500
LL
StatusDateUserResidueShift
Verified2013-02-03Skind_DK0ADF6D9426E6071818280890
Verified2021-02-02-Anonymous-0ADF6D9426E6071812608352
History
DateUserTypeResult
2021-02-02-Anonymous-C-LL
0ADF6D9426E60718
2015-12-18Mark RoseNF
no factor from 2^73 to 2^74
2015-12-18Mark RoseNF
no factor from 2^72 to 2^73
2013-02-03Skind_DKC-LL
0ADF6D9426E60718
2012-07-27Kyle AskineNF-PM1
B1=555000, B2=11932500, E=6
2012-07-06Tom DuellNF
no factor from 2^71 to 2^72
2011-09-26GregNF
no factor from 2^70 to 2^71
2011-09-26GregNF
no factor from 2^69 to 2^70
2011-09-18mmmmmdonutsNF
no factor from 2^72 to 2^73
2011-04-08Wolfgang StegerNF
no factor from 2^68 to 2^69
2009-11-28-Anonymous-NF
no factor from 2^67 to 2^68
2009-11-15Sturle SundeNF
no factor from 2^66 to 2^67
2009-01-07stigmvNF
no factor from 2^65 to 2^66
2009-01-06CoffmanANF
no factor from 2^64 to 2^65
2008-09-29-Anonymous-NF
no factor to 2^64