65 603 999 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 =	10730000

Status	Date	User	Residue	Shift	Software
Verified	2015-01-10	Kyle Z Schmidt	8473CAE4A01DB5B6	58092528	Windows 64-bit,Prime95,v28.5,build 2
Verified	2023-07-21	Kevin Slingsby	8473CAE4A01DB5B6	2904462	Windows 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2023-07-21	Kevin Slingsby	C-LL	8473CAE4A01DB5B6
2022-05-29	Richard Thomas	NF	no factor TF: 74-75
2016-03-29	Mark Rose	NF	no factor TF: 60-63
2015-01-10	Kyle Z Schmidt	C-LL	8473CAE4A01DB5B6
2014-02-18	markr	NF-PM1	B1=580000, B2=10730000
2014-02-12	Jerry Hallett	NF	no factor TF: 73-74
2014-02-09	electron1897	NF	no factor TF: 72-73
2013-12-22	bayanne	NF	no factor TF: 71-72
2013-03-23	LaurV	NF	no factor TF: 70-71
2013-03-23	LaurV	NF	no factor TF: 69-70
2010-02-15	arnaud	NF	no factor TF: 68-69
2010-02-13	Per Jessen	NF	no factor TF: 67-68
2010-02-09	Per Jessen	NF	no factor TF: 66-67
2009-10-27	HighPriceRanch	NF	no factor TF: 65-66
2009-03-28	-anonymous-	NF	no factor TF: 64-65
2009-01-20	Wojciech Florek	NF	no factor TF: 63-64
2004-06-21	1997rj7	NF	no factor TF: 1-60
2003-11-16	Gordon Spence	NF	no factor TF: 1-59