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
65257561Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 274
P-1
B1 = 580000
B2 = 11455000
LL
StatusDateUserResidueShift
Verified2015-01-21curtisc018D78792A3ED6F115708284
Verified2023-08-24cuBerBruce018D78792A3ED6F136505951
History
DateUserTypeResult
2023-08-24cuBerBruceC-LL
018D78792A3ED6F1
2021-08-01Richard ThomasNF
no factor from 2^74 to 2^75
2016-03-28Mark RoseNF
no factor from 2^60 to 2^63
2015-01-21curtiscC-LL
018D78792A3ED6F1
2014-02-02BdotNF-PM1
B1=580000, B2=11455000, E=6
2014-01-06BdotNF
no factor from 2^73 to 2^74
2014-01-04BdotNF
no factor from 2^72 to 2^73
2013-05-16RichD0NF
no factor from 2^70 to 2^72
2012-01-18oodairaNF
no factor from 2^69 to 2^70
2010-02-23TDH-DXLNF
no factor from 2^68 to 2^69
2010-02-18sannerud.comNF
no factor from 2^67 to 2^68
2010-02-18sannerud.comNF
no factor from 2^66 to 2^67
2009-12-12-Anonymous-NF
no factor from 2^65 to 2^66
2009-12-11riccardo ubertiNF
no factor from 2^64 to 2^65
2009-01-05Wojciech FlorekNF
no factor from 2^63 to 2^64