53 960 957 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 =	640000
B2 =	17600000

Status	Date	User	Residue	Shift	Software
Verified	2013-08-13	Oleg	BB58CBB01A537914	42934761	Windows 64-bit,Prime95,v27.7,build 2
Verified	2020-11-10	Dubslow	BB58CBB01A537914	13089781	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2020-11-10	Dubslow	C-LL	BB58CBB01A537914
2020-06-24	-anonymous-	NF	no factor TF: 74-75
2019-05-26	TheJudger	NF	no factor TF: 73-74
2016-02-13	AirSquirrels	NF	no factor TF: 72-73
2013-08-13	Oleg	C-LL	BB58CBB01A537914
2012-05-03	lycorn	NF	no factor TF: 71-72
2011-09-18	megavink	NF	no factor TF: 70-71
2011-05-13	GrunwalderGIMP	NF	no factor TF: 69-70
2011-04-19	GrunwalderGIMP	NF	no factor TF: 68-69
2011-04-18	TheJudger	NF-PM1	B1=640000, B2=17600000
2009-05-06	linded	NF	no factor TF: 67-68
2009-03-03	linded	NF	no factor TF: 66-67
2009-02-28	luke25	NF	no factor TF: 65-66
2009-02-23	luke25	NF	no factor TF: 64-65
2008-09-29	-anonymous-	NF	no factor TF: 1-64
2007-10-29	1997rj7	NF	no factor TF: 1-63
2004-06-21	1997rj7	NF	no factor TF: 1-60
2002-08-10	-anonymous-	NF	no factor TF: 1-58
2001-08-24	-anonymous-	NF	no factor TF: 1-57
2000-05-31	-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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