53 305 313 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 =	620000
B2 =	15190000

Status	Date	User	Residue	Shift	Software
Verified	2012-07-25	KC	1D852C546D698755	12766396	Windows Service,Prime95,v26.6,build 3
Verified	2020-08-11	Dubslow	1D852C546D698755	38649512	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2020-08-11	Dubslow	C-LL	1D852C546D698755
2019-07-10	-anonymous-	NF	no factor TF: 73-74
2016-02-02	AirSquirrels	NF	no factor TF: 72-73
2012-07-25	KC	C-LL	1D852C546D698755
2012-04-25	Craig Meyers	NF	no factor TF: 71-72
2012-03-07	megavink	NF	no factor TF: 70-71
2011-10-16	hustensaft	NF	no factor TF: 69-70
2010-10-19	tmorrow	NF	no factor TF: 68-69
2010-10-17	delta_t	NF-PM1	B1=620000, B2=15190000
2009-05-15	Sturle Sunde	NF	no factor TF: 67-68
2009-05-13	Roman Maznichenko	NF	no factor TF: 66-67
2009-05-13	Roman Maznichenko	NF	no factor TF: 65-66
2009-05-13	Roman Maznichenko	NF	no factor TF: 64-65
2008-08-18	-anonymous-	NF	no factor TF: 1-64
2007-08-14	1997rj7	NF	no factor TF: 1-63
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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