53 781 569 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 =	620000
B2 =	14570000

Status	Date	User	Residue	Shift	Software
Verified	2012-12-01	-anonymous-	7055FB5F8BD765F1	28656203	Windows 64-bit,Prime95,v27.7,build 2
Verified	2020-10-08	Dubslow	7055FB5F8BD765F1	794925	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2020-10-08	Dubslow	C-LL	7055FB5F8BD765F1
2020-09-30	ViliamF	NF	no factor TF: 74-75
2019-08-26	chuenkit	NF	no factor TF: 73-74
2016-02-03	AirSquirrels	NF	no factor TF: 72-73
2012-12-01	-anonymous-	C-LL	7055FB5F8BD765F1
2012-06-20	Son Johan	NF	no factor TF: 71-72
2011-09-08	megavink	NF	no factor TF: 70-71
2011-09-08	megavink	NF	no factor TF: 69-70
2011-04-19	Ujjwal Chalise	NF	no factor TF: 68-69
2011-04-13	ixfd64	NF-PM1	B1=620000, B2=14570000
2009-05-13	RoaldS	NF	no factor TF: 67-68
2008-12-28	tmorrow	NF	no factor TF: 66-67
2008-12-26	tmorrow	NF	no factor TF: 65-66
2008-12-23	tmorrow	NF	no factor TF: 64-65
2008-07-14	-anonymous-	NF	no factor TF: 1-64
2007-09-13	1997rj7	NF	no factor TF: 1-63
2004-06-04	1997rj7	NF	no factor TF: 1-60
2002-07-27	-anonymous-	NF	no factor TF: 1-58
2001-08-24	-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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