64 969 187 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 =	580000
B2 =	11600000

Status	Date	User	Residue	Shift	Software
Verified	2014-11-29	Kyle Z Schmidt	A6FDC62275645DC7	44800026	Windows 64-bit,Prime95,v28.5,build 2
Verified	2022-09-25	-anonymous-	A6FDC62275645DC7	44267000	Windows,Prime95,v25.11,build 2

History

Date	User	Type	Result
2022-09-25	-anonymous-	C-LL	A6FDC62275645DC7
2022-06-29	LordJulius	NF	no factor TF: 74-75
2016-02-23	Mark Rose	NF	no factor TF: 60-63
2014-11-29	Kyle Z Schmidt	C-LL	A6FDC62275645DC7
2013-06-26	rx7350	NF-PM1	B1=580000, B2=11600000, E=12
2013-06-22	Jerry Hallett	NF	no factor TF: 73-74
2013-05-21	TheJudger	NF	no factor TF: 72-73
2013-05-21	TheJudger	NF	no factor TF: 71-72
2013-05-21	TheJudger	NF	no factor TF: 70-71
2012-02-07	kksamy	NF	no factor TF: 69-70
2009-11-02	Piepen	NF	no factor TF: 68-69
2009-10-28	usmfun	NF	no factor TF: 67-68
2009-10-27	Matthias Schon	NF	no factor TF: 66-67
2009-10-21	eon_blue_apocalypse	NF	no factor TF: 65-66
2009-10-18	Pwrguru	NF	no factor TF: 64-65
2009-06-01	Architects Cubed	NF	no factor TF: 63-64
2004-02-14	AxelFox	NF	no factor TF: 1-60
2003-10-08	Gordon Spence	NF	no factor TF: 1-59