53 290 163 Exponent Status

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁵

TF target 2⁷³

P-1

B1 =	630000
B2 =	17797500

Status	Date	User	Residue	Shift	Software
Verified	2011-10-31	Tony Pryse	B7ADFA72E956B6A0	37862267	Windows,Prime95,v25.8,build 5
Verified	2020-08-06	Dubslow	B7ADFA72E956B6A0	42057368	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2020-08-06	Dubslow	C-LL	B7ADFA72E956B6A0
2020-06-19	-anonymous-	NF	no factor TF: 74-75
2019-01-21	Mark Rose	NF	no factor TF: 73-74
2016-02-05	AirSquirrels	NF	no factor TF: 72-73
2015-12-18	-anonymous-	NF	no factor TF: 71-72
2015-06-12	Mark Rose	NF	no factor TF: 70-71
2011-10-31	Tony Pryse	C-LL	B7ADFA72E956B6A0
2011-05-12	Todd Walke	NF	no factor TF: 69-70
2010-10-13	ITS	NF	no factor TF: 68-69
2010-10-05	Commaster	NF-PM1	B1=630000, B2=17797500, E=6
2009-04-29	Gordon Houtman	NF	no factor TF: 67-68
2008-12-20	Sturle Sunde	NF	no factor TF: 66-67
2008-12-19	Sturle Sunde	NF	no factor TF: 65-66
2008-12-18	Sturle Sunde	NF	no factor TF: 64-65
2008-08-11	-anonymous-	NF	no factor TF: 1-64
2004-04-29	1997rj7	NF	no factor TF: 1-60
2002-06-29	-anonymous-	NF	no factor TF: 1-58
2001-08-04	-anonymous-	NF	no factor TF: 1-57
2000-05-24	-anonymous-	NF	no factor TF: 1-56
2000-03-01	-anonymous-	NF	no factor TF: 1-54
2000-01-12	-anonymous-	NF	no factor TF: 1-53
1999-12-08	-anonymous-	NF	no factor TF: 1-53

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