65 972 437 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 =	585000
B2 =	11407500

Status	Date	User	Residue	Shift	Software
Verified	2015-02-15	Kyle Z Schmidt	3F917E712B22515E	36907483	Windows 64-bit,Prime95,v28.5,build 2
Verified	2023-01-25	Ryan Propper	3F917E712B22515E	19238422	Linux 64-bit,Prime95,v30.7,build 9

History

Date	User	Type	Result
2024-05-28	Naegi Makoto	NF	no factor TF: 70-71
2023-01-25	Ryan Propper	C-LL	3F917E712B22515E
2021-09-17	tottenhoff	NF	no factor TF: 74-75
2016-03-28	Mark Rose	NF	no factor TF: 60-63
2015-02-15	Kyle Z Schmidt	C-LL	3F917E712B22515E
2014-03-20	Bdot	NF-PM1	B1=585000, B2=11407500
2014-03-11	Craig Meyers	NF	no factor TF: 71-74
2013-07-18	Carsten Kossendey	NF	no factor TF: 70-71
2012-02-05	ITS	NF	no factor TF: 69-70
2010-03-22	Zistrosk	NF	no factor TF: 68-69
2010-03-16	Zistrosk	NF	no factor TF: 67-68
2010-03-11	EN	NF	no factor TF: 66-67
2010-03-05	EN	NF	no factor TF: 65-66
2009-03-26	bayanne	NF	no factor TF: 64-65
2009-01-23	Wojciech Florek	NF	no factor TF: 63-64
2004-03-26	1997rj7	NF	no factor TF: 1-60
2003-11-28	Gordon Spence	NF	no factor TF: 1-59