65 873 957 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 =	11750000

Status	Date	User	Residue	Shift	Software
Verified	2015-02-10	Kyle Z Schmidt	286B51B9C41CB068	14047739	Windows 64-bit,Prime95,v28.5,build 2
Verified	2023-01-10	Ryan Propper	286B51B9C41CB068	12865366	Linux 64-bit,Prime95,v30.7,build 9

History

Date	User	Type	Result
2023-01-10	Ryan Propper	C-LL	286B51B9C41CB068
2021-10-16	tottenhoff	NF	no factor TF: 74-75
2016-03-29	Mark Rose	NF	no factor TF: 60-63
2015-02-10	Kyle Z Schmidt	C-LL	286B51B9C41CB068
2013-07-16	kdgehman	NF-PM1	B1=595000, B2=11750000, E=12
2013-06-24	kdgehman	NF	no factor TF: 73-74
2013-06-24	kdgehman	NF	no factor TF: 72-73
2013-06-24	kdgehman	NF	no factor TF: 71-72
2013-01-13	kdgehman	NF	no factor TF: 70-71
2012-01-26	GrunwalderGIMP	NF	no factor TF: 69-70
2009-10-23	Sturle Sunde	NF	no factor TF: 68-69
2009-03-31	glennpat	NF	no factor TF: 67-68
2009-03-30	glennpat	NF	no factor TF: 66-67
2009-03-29	-anonymous-	NF	no factor TF: 65-66
2009-03-26	Sturle Sunde	NF	no factor TF: 64-65
2009-01-23	Wojciech Florek	NF	no factor TF: 63-64
2004-08-20	1997rj7	NF	no factor TF: 1-60
2003-11-28	Gordon Spence	NF	no factor TF: 1-59