63 652 441 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 =	570000
B2 =	11257500

Status	Date	User	Residue	Shift	Software
Verified	2014-03-05	Kyle Z Schmidt	5D23487D0FB8A8A6	7770161	Windows 64-bit,Prime95,v27.9,build 1
Verified	2023-01-26	kkmrkkblmbrbk	5D23487D0FB8A8A6	817721	Windows 64-bit,Prime95,v30.3,build 6

History

Date	User	Type	Result
2023-01-26	kkmrkkblmbrbk	C-LL	5D23487D0FB8A8A6
2022-12-11	tottenhoff	NF	no factor TF: 74-75
2016-02-23	Mark Rose	NF	no factor TF: 59-63
2014-03-05	Kyle Z Schmidt	C-LL	5D23487D0FB8A8A6
2013-10-08	BigBrother	NF-PM1	B1=570000, B2=11257500, E=6
2013-10-06	The Mawn	NF	no factor TF: 73-74
2013-07-01	TheJudger	NF	no factor TF: 72-73
2013-07-01	TheJudger	NF	no factor TF: 71-72
2012-06-14	sjgokou	NF	no factor TF: 70-71
2012-01-09	MarekB	NF	no factor TF: 69-70
2009-12-04	CubeQuest.org	NF	no factor TF: 68-69
2009-11-26	KayJongsma	NF	no factor TF: 67-68
2009-09-21	jjknw	NF	no factor TF: 66-67
2009-09-10	hete	NF	no factor TF: 65-66
2009-09-07	Sturle Sunde	NF	no factor TF: 64-65
2009-02-24	Wojciech Florek	NF	no factor TF: 63-64
2003-08-25	Gordon Spence	NF	no factor TF: 1-59