53 878 507 Exponent Status

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁴

TF target 2⁷³

P-1

B1 =	1220000
B2 =	40260000

Status	Date	User	Residue	Shift	Software
Bad	2012-08-21	-anonymous-	0000000000000000	0	Windows,Prime95,v25.11,build 2
Verified	2012-08-28	Jerry Hallett	5CDB10CCE6AB8132	1415856	Windows 64-bit,Prime95,v27.7,build 2
Verified	2014-11-09	MadPoo 🙂	5CDB10CCE6AB8132	16417392	Windows 64-bit,Prime95,v26,(aka We4)

History

Date	User	Type	Result
2014-11-09	MadPoo 🙂	C-LL	5CDB10CCE6AB8132
2012-08-28	Jerry Hallett	C-LL	5CDB10CCE6AB8132
2012-08-23	Jerry Hallett	NF-PM1	B1=1220000, B2=40260000, E=12
2012-08-22	Jerry Hallett	NF	no factor TF: 72-74
2012-08-21	-anonymous-	C-LL	30B4AD007D332B__
2012-04-29	bcp19	NF	no factor TF: 71-72
2011-07-09	kdgehman	NF	no factor TF: 70-71
2011-05-17	dsl	NF	no factor TF: 69-70
2011-04-12	Marzbug	NF	no factor TF: 68-69
2011-04-05	Matt Perry	NF-PM1	B1=650000, B2=19012500
2009-05-06	egwin	NF	no factor TF: 67-68
2009-02-21	flying_pizza	NF	no factor TF: 66-67
2009-02-20	rx7350	NF	no factor TF: 65-66
2009-02-20	Old Duffer	NF	no factor TF: 64-65
2008-08-25	-anonymous-	NF	no factor TF: 1-64
2007-10-17	1997rj7	NF	no factor TF: 1-63
2004-06-04	1997rj7	NF	no factor TF: 1-60
2002-08-03	-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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