65 844 973 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 =	590000
B2 =	11947500

Status	Date	User	Residue	Shift	Software
Verified	2015-02-07	Kyle Z Schmidt	FC63E2F7509FD874	23545077	Windows 64-bit,Prime95,v28.5,build 2
Verified	2022-12-31	Ryan Propper	FC63E2F7509FD874	49826009	Linux 64-bit,Prime95,v30.7,build 9

History

Date	User	Type	Result
2024-05-28	Naegi Makoto	NF	no factor TF: 70-71
2022-12-31	Ryan Propper	C-LL	FC63E2F7509FD874
2021-11-07	Richard Thomas	NF	no factor TF: 74-75
2016-03-28	Mark Rose	NF	no factor TF: 60-63
2015-02-07	Kyle Z Schmidt	C-LL	FC63E2F7509FD874
2014-04-30	Nesowa	NF-PM1	B1=590000, B2=11947500, E=12
2014-04-27	Nesowa	NF	no factor TF: 73-74
2014-02-16	TheJudger	NF	no factor TF: 72-73
2014-01-22	RichD0	NF	no factor TF: 71-72
2013-07-18	Carsten Kossendey	NF	no factor TF: 70-71
2012-01-26	Emil Steen	NF	no factor TF: 69-70
2010-05-26	Aldo_Grid	NF	no factor TF: 68-69
2010-05-20	Aldo_Grid	NF	no factor TF: 67-68
2010-05-14	Torchwood Institute	NF	no factor TF: 66-67
2010-05-14	Owner	NF	no factor TF: 65-66
2010-03-10	Geoff Wing	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