53 850 149 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 =	19200000

Status	Date	User	Residue	Shift	Software
Verified	2012-04-12	Wolfgang Steger	648667DAC7442751	29464524	Linux 32-bit,Prime95,v25.11,build 2
Verified	2020-10-18	Dubslow	648667DAC7442751	41833567	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2020-10-18	Dubslow	C-LL	648667DAC7442751
2020-10-06	ViliamF	NF	no factor TF: 74-75
2019-08-30	Chuck	NF	no factor TF: 73-74
2016-02-13	AirSquirrels	NF	no factor TF: 72-73
2012-04-12	Wolfgang Steger	C-LL	648667DAC7442751
2012-01-04	Wizzard	NF	no factor TF: 71-72
2011-05-20	kdgehman	NF-PM1	B1=640000, B2=19200000, E=6
2011-05-11	kdgehman	NF	no factor TF: 70-71
2011-03-07	kdgehman	NF	no factor TF: 69-70
2011-03-07	kdgehman	NF	no factor TF: 68-69
2009-05-08	-anonymous-	NF	no factor TF: 67-68
2009-01-03	James Heinrich	NF	no factor TF: 66-67
2008-12-24	James Heinrich	NF	no factor TF: 65-66
2008-12-21	-anonymous-	NF	no factor TF: 64-65
2008-08-11	-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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