53 521 333 Exponent Status

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁶

TF target 2⁷³

P-1

B1 =	635000
B2 =	18573750

Status	Date	User	Residue	Shift	Software
Verified	2011-09-24	ericnm	E3CBA95B5160581F	24110395	Windows,Prime95,v25.9,build 4
Verified	2020-10-02	Dubslow	E3CBA95B5160581F	18326892	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2020-10-02	Dubslow	C-LL	E3CBA95B5160581F
2020-09-23	John Barrett	NF	no factor TF: 74-75
2020-09-23	John Barrett	NF	no factor TF: 75-76
2019-01-06	Mark Rose	NF	no factor TF: 73-74
2016-02-09	AirSquirrels	NF	no factor TF: 72-73
2015-12-18	-anonymous-	NF	no factor TF: 71-72
2015-06-04	Mark Rose	NF	no factor TF: 70-71
2011-09-24	ericnm	C-LL	E3CBA95B5160581F
2011-06-04	megavink	NF	no factor TF: 69-70
2011-02-18	eon_blue_apocalypse	NF	no factor TF: 68-69
2011-02-15	kurly	NF-PM1	B1=635000, B2=18573750, E=6
2009-05-03	MarkS	NF	no factor TF: 67-68
2009-02-24	David Hruska	NF	no factor TF: 66-67
2009-02-22	David Hruska	NF	no factor TF: 65-66
2009-02-19	David Hruska	NF	no factor TF: 64-65
2008-07-21	-anonymous-	NF	no factor TF: 1-64
2007-09-28	1997rj7	NF	no factor TF: 1-63
2004-05-11	1997rj7	NF	no factor TF: 1-60
2002-07-14	-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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