64 385 693 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	595000
B2 =	14726250

Status	Date	User	Residue	Shift	Software
Verified	2014-10-16	Kyle Z Schmidt	F05ECDEDDC913613	16877038	Windows 64-bit,Prime95,v27.9,build 1
Verified	2023-06-15	BigRich	F05ECDEDDC913613	63937021	Linux 64-bit,Prime95,v30.8,build 15

History

Date	User	Type	Result
2023-06-15	BigRich	C-LL	F05ECDEDDC913613
2019-09-12	Sid & Andy	NF	no factor TF: 74-75
2016-02-23	Mark Rose	NF	no factor TF: 60-63
2014-10-16	Kyle Z Schmidt	C-LL	F05ECDEDDC913613
2013-09-10	Craig Meyers	NF-PM1	B1=595000, B2=14726250, E=6
2013-05-07	Sebastian Hornbostel	NF	no factor TF: 73-74
2013-05-07	Sebastian Hornbostel	NF	no factor TF: 72-73
2013-05-07	Sebastian Hornbostel	NF	no factor TF: 71-72
2013-05-07	Sebastian Hornbostel	NF	no factor TF: 70-71
2012-04-13	arnaud	NF	no factor TF: 69-70
2010-09-18	Ethan	NF	no factor TF: 68-69
2009-12-27	M Delaunay	NF	no factor TF: 67-68
2009-12-18	mojojojohh	NF	no factor TF: 66-67
2009-10-11	Kalmagloster	NF	no factor TF: 65-66
2009-10-06	hgn	NF	no factor TF: 64-65
2009-05-31	Architects Cubed	NF	no factor TF: 63-64
2004-01-18	AxelFox	NF	no factor TF: 1-60
2003-09-14	Gordon Spence	NF	no factor TF: 1-59