65 718 847 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 =	575000
B2 =	10062500

Status	Date	User	Residue	Shift	Software
Verified	2015-01-18	Kyle Z Schmidt	CD0B2954FA89EE86	24973246	Windows 64-bit,Prime95,v28.5,build 2
Verified	2022-12-23	Schnell Lab	CD0B2954FA89EE86	48932425	Windows 64-bit,Prime95,v30.3,build 6

History

Date	User	Type	Result
2022-12-23	Schnell Lab	C-LL	CD0B2954FA89EE86
2022-03-24	Richard Thomas	NF	no factor TF: 74-75
2016-03-29	Mark Rose	NF	no factor TF: 60-63
2015-01-18	Kyle Z Schmidt	C-LL	CD0B2954FA89EE86
2013-12-15	antkh	NF-PM1	B1=575000, B2=10062500
2013-09-18	Jerry Hallett	NF	no factor TF: 73-74
2013-09-12	Jerry Hallett	NF	no factor TF: 72-73
2013-05-08	Chuck	NF	no factor TF: 71-72
2012-06-21	Zopper	NF	no factor TF: 70-71
2012-01-23	E.J.SanYo	NF	no factor TF: 69-70
2009-11-11	Andrey Kurgannikov	NF	no factor TF: 68-69
2009-11-05	Romanyuk	NF	no factor TF: 67-68
2009-11-02	Romanyuk	NF	no factor TF: 66-67
2009-10-31	unixblackhole	NF	no factor TF: 65-66
2009-03-26	ALF	NF	no factor TF: 64-65
2009-01-20	Wojciech Florek	NF	no factor TF: 63-64
2004-07-26	1997rj7	NF	no factor TF: 1-60
2003-11-16	Gordon Spence	NF	no factor TF: 1-59