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
64098641Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 274
P-1
B1 = 575000
B2 = 11356250
LL
StatusDateUserResidueShift
Verified2014-11-06Arthur Rosenthal76A5EC22B84ACAD863537184
Verified2022-09-21Andrew_and76A5EC22B84ACAD83841811
History
DateUserTypeResult
2022-09-21Andrew_andC-LL
76A5EC22B84ACAD8
2016-02-23Mark RoseNF
no factor from 2^60 to 2^63
2014-11-06Arthur RosenthalC-LL
76A5EC22B84ACAD8
2013-10-05Brian ChanNF-PM1
B1=575000, B2=11356250, E=6
2013-08-31ChuckNF
no factor from 2^73 to 2^74
2013-08-31ChuckNF
no factor from 2^72 to 2^73
2013-08-27PhantomasNF
no factor from 2^71 to 2^72
2012-06-04ANONYMOUSNF
no factor from 2^70 to 2^71
2012-01-23america64NF
no factor from 2^69 to 2^70
2009-10-02primeoneNF
no factor from 2^68 to 2^69
2009-03-16bamNF
no factor from 2^67 to 2^68
2009-03-15Nemo_bisNF
no factor from 2^66 to 2^67
2009-03-10jfarekNF
no factor from 2^65 to 2^66
2009-03-06Renzo Carlo AvanzoNF
no factor from 2^64 to 2^65
2009-03-05Renzo Carlo AvanzoNF
no factor from 2^63 to 2^64