64 726 247 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 =	11745000

Status	Date	User	Residue	Shift	Software
Verified	2014-11-08	Kyle Z Schmidt	787E2488B90006AD	7651528	Windows 64-bit,Prime95,v28.5,build 2
Verified	2023-05-21	volki	787E2488B90006AD	40640707	Linux 64-bit,Prime95,v30.3,build 6

History

Date	User	Type	Result
2023-05-21	volki	C-LL	787E2488B90006AD
2022-07-26	La Güira	NF	no factor TF: 74-75
2016-02-23	Mark Rose	NF	no factor TF: 60-63
2014-11-08	Kyle Z Schmidt	C-LL	787E2488B90006AD
2013-12-22	TheJudger	NF-PM1	B1=580000, B2=11745000, E=12
2013-12-15	Kevin Jaget	NF	no factor TF: 73-74
2013-12-15	Kevin Jaget	NF	no factor TF: 72-73
2013-11-07	AllRandom	NF	no factor TF: 71-72
2012-06-05	jondi_hanluc	NF	no factor TF: 70-71
2012-01-10	]mh[ Virtek	NF	no factor TF: 69-70
2010-02-27	sunithaya	NF	no factor TF: 68-69
2010-02-24	sunithaya	NF	no factor TF: 67-68
2010-02-21	sunithaya	NF	no factor TF: 66-67
2010-02-19	sunithaya	NF	no factor TF: 65-66
2009-10-12	symallad	NF	no factor TF: 64-65
2009-03-12	Sturle Sunde	NF	no factor TF: 63-64
2004-02-07	AxelFox	NF	no factor TF: 1-60
2003-09-29	Gordon Spence	NF	no factor TF: 1-59