53 298 307 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 =	18270000

Status	Date	User	Residue	Shift	Software
Verified	2011-09-02	Dubslow	C4A9E635EC5F69B7	51683418	Windows 64-bit,Prime95,v26.6,build 3
Verified	2020-06-21	shtainze1	C4A9E635EC5F69B7	47033259	Windows 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2020-06-21	shtainze1	C-LL	C4A9E635EC5F69B7
2020-06-19	-anonymous-	NF	no factor TF: 74-75
2019-01-20	Mark Rose	NF	no factor TF: 73-74
2016-02-10	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
2011-09-02	Dubslow	C-LL	C4A9E635EC5F69B7
2011-05-15	David L	NF	no factor TF: 69-70
2010-10-25	willmore	NF	no factor TF: 68-69
2010-10-20	RichD0	NF-PM1	B1=630000, B2=18270000
2009-04-27	Sturle Sunde	NF	no factor TF: 67-68
2008-12-24	Remote009	NF	no factor TF: 66-67
2008-12-21	Remote009	NF	no factor TF: 65-66
2008-12-17	James Hintz	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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