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
64380661Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 274
P-1
B1 = 575000
B2 = 11500000
LL
StatusDateUserResidueShift
Verified2014-11-02REThern21D646D39958ABDF25398542
Verified2022-03-03Conductor21D646D39958ABDF40821857
History
DateUserTypeResult
2022-03-03ConductorC-LL
21D646D39958ABDF
2019-09-14Sid & AndyNF
no factor from 2^74 to 2^75
2016-02-23Mark RoseNF
no factor from 2^60 to 2^63
2014-11-02REThernC-LL
21D646D39958ABDF
2013-11-10TheJudgerNF-PM1
B1=575000, B2=11500000, E=12
2013-11-02chappjcNF
no factor from 2^73 to 2^74
2012-12-28Son JohanNF
no factor from 2^72 to 2^73
2012-12-21Son JohanNF
no factor from 2^71 to 2^72
2012-12-21Son JohanNF
no factor from 2^70 to 2^71
2012-12-21Son JohanNF
no factor from 2^69 to 2^70
2010-05-06-Anonymous-NF
no factor from 2^68 to 2^69
2010-02-26SuperNijnNF
no factor from 2^67 to 2^68
2010-02-21BARBBARITTANF
no factor from 2^66 to 2^67
2009-12-19-Anonymous-NF
no factor from 2^65 to 2^66
2009-12-07-Anonymous-NF
no factor from 2^64 to 2^65
2009-05-31Architects CubedNF
no factor from 2^63 to 2^64