53 428 789 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 =	630000
B2 =	17797500

Status	Date	User	Residue	Shift	Software
Verified	2013-12-03	Smegheads	4E0D1A1FEDEAEA57	24459577	Windows 64-bit,Prime95,v27.9,build 1
Verified	2020-09-09	Dubslow	4E0D1A1FEDEAEA57	46679418	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2020-09-09	Dubslow	C-LL	4E0D1A1FEDEAEA57
2019-07-26	ktony	NF	no factor TF: 73-74
2016-02-12	AirSquirrels	NF	no factor TF: 72-73
2013-12-03	Smegheads	C-LL	4E0D1A1FEDEAEA57
2012-03-17	megavink	NF	no factor TF: 71-72
2012-03-17	megavink	NF	no factor TF: 70-71
2011-05-31	megavink	NF	no factor TF: 69-70
2011-01-02	delta_t	NF	no factor TF: 68-69
2010-12-30	kmd	NF-PM1	B1=630000, B2=17797500, E=6
2009-07-21	TDH-DXL	NF	no factor TF: 67-68
2008-12-20	Roman Maznichenko	NF	no factor TF: 66-67
2008-12-19	Roman Maznichenko	NF	no factor TF: 65-66
2008-12-18	Roman Maznichenko	NF	no factor TF: 64-65
2008-10-19	-anonymous-	NF	no factor TF: 1-64
2007-11-17	1997rj7	NF	no factor TF: 1-63
2004-05-11	1997rj7	NF	no factor TF: 1-60
2002-07-06	-anonymous-	NF	no factor TF: 1-58
2001-08-12	-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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