65 589 527 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	2014-03-03	Kyle Z Schmidt	4FE706F40D0587FA	28381542	Windows 64-bit,Prime95,v27.9,build 1
Verified	2023-02-14	Jim Donovan	4FE706F40D0587FA	39098073	Linux 64-bit,Prime95,v30.8,build 18

History

Date	User	Type	Result
2023-02-14	Jim Donovan	C-LL	4FE706F40D0587FA
2022-06-14	y-omori	NF	no factor TF: 74-75
2016-03-29	Mark Rose	NF	no factor TF: 60-63
2014-03-03	Kyle Z Schmidt	C-LL	4FE706F40D0587FA
2014-02-05	markr	NF-PM1	B1=580000, B2=10730000
2014-01-30	RichD0	NF	no factor TF: 73-74
2014-01-27	Bdot	NF	no factor TF: 72-73
2013-12-21	RichD0	NF	no factor TF: 71-72
2012-06-27	Jens Pedersen	NF	no factor TF: 70-71
2012-01-25	ITS	NF	no factor TF: 69-70
2009-12-04	seekua	NF	no factor TF: 68-69
2009-12-03	steinrar	NF	no factor TF: 67-68
2009-12-01	steinrar	NF	no factor TF: 66-67
2009-11-29	steinrar	NF	no factor TF: 65-66
2009-11-26	John Renström	NF	no factor TF: 64-65
2009-01-14	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