63 300 239 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 =	565000
B2 =	10876250

Status	Date	User	Residue	Shift	Software
Verified	2014-07-15	Kyle Z Schmidt	DE97DB4E2E362150	4053419	Windows 64-bit,Prime95,v27.9,build 1
Verified	2022-12-28	KC	DE97DB4E2E362150	54801953	Windows Service,Prime95,v29.4,build 7

History

Date	User	Type	Result
2022-12-28	KC	C-LL	DE97DB4E2E362150
2022-12-14	La Güira	NF	no factor TF: 74-75
2016-02-23	Mark Rose	NF	no factor TF: 59-63
2014-07-15	Kyle Z Schmidt	C-LL	DE97DB4E2E362150
2013-07-11	Team_Inspector	NF-PM1	B1=565000, B2=10876250, E=4
2013-07-02	RichD0	NF	no factor TF: 73-74
2013-05-06	TheJudger	NF	no factor TF: 72-73
2013-05-06	TheJudger	NF	no factor TF: 71-72
2012-05-30	-anonymous-	NF	no factor TF: 70-71
2012-05-15	Dr. Nowak	NF	no factor TF: 69-70
2009-11-18	-anonymous-	NF	no factor TF: 68-69
2009-11-08	GrunwalderGIMP	NF	no factor TF: 67-68
2009-11-07	Sturle Sunde	NF	no factor TF: 66-67
2009-11-06	Helmut Zulus	NF	no factor TF: 65-66
2009-09-04	Aleksey Osadchiy	NF	no factor TF: 64-65
2009-02-16	Wojciech Florek	NF	no factor TF: 63-64
2003-07-30	Gordon Spence	NF	no factor TF: 1-59
1999-11-17	-anonymous-	NF	no factor TF: 1-50