65 311 871 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 =	600000
B2 =	14700000

Status	Date	User	Residue	Shift	Software
Verified	2014-12-21	Kyle Z Schmidt	288C65139E8666F8	48816100	Windows 64-bit,Prime95,v28.5,build 2
Verified	2023-06-25	CraigMChamberlain	288C65139E8666F8	23964503	Windows 64-bit,Prime95,v28.7,build 1

History

Date	User	Type	Result
2023-06-25	CraigMChamberlain	C-LL	288C65139E8666F8
2022-07-05	LordJulius	NF	no factor TF: 74-75
2016-03-28	Mark Rose	NF	no factor TF: 67-68
2016-03-27	Mark Rose	NF	no factor TF: 60-63
2014-12-21	Kyle Z Schmidt	C-LL	288C65139E8666F8
2014-02-01	Numberwang	NF-PM1	B1=600000, B2=14700000, E=6
2014-01-23	The Mawn	NF	no factor TF: 73-74
2014-01-23	The Mawn	NF	no factor TF: 72-73
2013-12-11	RichD0	NF	no factor TF: 71-72
2012-06-24	lbebert	NF	no factor TF: 70-71
2012-01-18	-anonymous-	NF	no factor TF: 69-70
2010-03-06	Sturle Sunde	NF	no factor TF: 68-69
2010-03-01	Torchwood Institute	NF	no factor TF: 66-67
2010-02-26	-anonymous-	NF	no factor TF: 65-66
2009-12-24	-anonymous-	NF	no factor TF: 64-65
2009-01-05	Wojciech Florek	NF	no factor TF: 63-64
2004-04-20	1997rj7	NF	no factor TF: 1-60
2003-11-08	Gordon Spence	NF	no factor TF: 1-59