64 548 251 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 =	555000
B2 =	8880000

Status	Date	User	Residue	Shift	Software
Verified	2014-10-26	Kyle Z Schmidt	8846A5E2F6126BE6	5333403	Windows 64-bit,Prime95,v28.5,build 2
Verified	2023-04-18	brode-runner	8846A5E2F6126BE6	27699124	Linux 64-bit,Prime95,v29.8,build 3

History

Date	User	Type	Result
2023-04-18	brode-runner	C-LL	8846A5E2F6126BE6
2022-10-27	Naegi Makoto	NF	no factor TF: 74-75
2016-02-23	Mark Rose	NF	no factor TF: 60-63
2014-10-26	Kyle Z Schmidt	C-LL	8846A5E2F6126BE6
2013-11-24	kracker	NF-PM1	B1=555000, B2=8880000
2013-11-17	TheJudger	NF	no factor TF: 73-74
2013-11-17	TheJudger	NF	no factor TF: 72-73
2013-10-11	Mark Rose	NF	no factor TF: 71-72
2012-09-12	Bold_Seeker	NF	no factor TF: 70-71
2012-01-10	-anonymous-	NF	no factor TF: 69-70
2010-04-23	eon_blue_apocalypse	NF	no factor TF: 68-69
2010-04-20	John Tolly	NF	no factor TF: 67-68
2010-04-18	Torchwood Institute	NF	no factor TF: 66-67
2010-04-15	Aleksey Osadchiy	NF	no factor TF: 65-66
2010-04-13	Aleksey Osadchiy	NF	no factor TF: 64-65
2009-03-14	Miiike	NF	no factor TF: 63-64
2004-01-27	AxelFox	NF	no factor TF: 1-60
2003-09-29	Gordon Spence	NF	no factor TF: 1-59