64 390 439 Exponent Status

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	905000
B2 =	19683750

Status	Date	User	Residue	Shift	Software
Verified	2015-04-07	curtisc	FFE5B7E34D0FE5D9	31449045	Windows Service,Prime95,v27.7,build 2
Verified	2023-08-21	tottenhoff	FFE5B7E34D0FE5D9	18751073	Windows 64-bit,Prime95,v30.8,build 17
Verified	2023-08-23	Yxinity	FFE5B7E34D0FE5D9	29121380	Windows 64-bit,Prime95,v30.8,build 15
Verified	2023-09-20	iwes	FFE5B7E34D0FE5D9	201746	Windows 64-bit,Prime95,v30.7,build 9

History

Date	User	Type	Result
2023-09-20	iwes	C-LL	FFE5B7E34D0FE5D9
2023-08-23	Yxinity	C-LL	FFE5B7E34D0FE5D9
2023-08-21	tottenhoff	C-LL	FFE5B7E34D0FE5D9
2019-09-11	Sid & Andy	NF	no factor TF: 74-75
2016-02-23	Mark Rose	NF	no factor TF: 60-63
2015-04-07	curtisc	C-LL	FFE5B7E34D0FE5D9
2014-01-01	Jerry Hallett	NF-PM1	B1=905000, B2=19683750, E=6
2013-12-30	Kevin Jaget	NF	no factor TF: 73-74
2013-12-30	Kevin Jaget	NF	no factor TF: 72-73
2013-10-15	JoDu	NF	no factor TF: 71-72
2013-05-06	lycorn	NF	no factor TF: 70-71
2012-04-14	S00030	NF	no factor TF: 69-70
2010-01-18	unconnected	NF	no factor TF: 68-69
2010-01-16	{WC}PistolPete	NF	no factor TF: 67-68
2009-10-13	-anonymous-	NF	no factor TF: 66-67
2009-10-11	-anonymous-	NF	no factor TF: 65-66
2009-10-06	SAHS Science Dept	NF	no factor TF: 64-65
2009-03-10	linded	NF	no factor TF: 63-64
2004-01-18	AxelFox	NF	no factor TF: 1-60
2003-09-14	Gordon Spence	NF	no factor TF: 1-59

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