53 347 771 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 =	625000
B2 =	17187500

Status	Date	User	Residue	Shift	Software
Verified	2011-08-16	Amazon EC2	2868677D68DB7007	21550284	Linux 64-bit,Prime95,v26.5,build 5
Verified	2020-08-22	Dubslow	2868677D68DB7007	46419568	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2020-08-22	Dubslow	C-LL	2868677D68DB7007
2019-07-16	ixfd64	NF	no factor TF: 73-74
2016-02-11	AirSquirrels	NF	no factor TF: 72-73
2015-12-20	-anonymous-	NF	no factor TF: 71-72
2015-06-02	Mark Rose	NF	no factor TF: 70-71
2011-08-16	Amazon EC2	C-LL	2868677D68DB7007
2011-05-23	megavink	NF	no factor TF: 69-70
2010-10-28	forrest-lumpkin	NF	no factor TF: 68-69
2010-10-26	S04803	NF-PM1	B1=625000, B2=17187500
2009-04-29	subgenius	NF	no factor TF: 67-68
2009-02-21	tmorrow	NF	no factor TF: 66-67
2009-02-20	cswchan	NF	no factor TF: 65-66
2009-02-16	cswchan	NF	no factor TF: 64-65
2008-09-08	-anonymous-	NF	no factor TF: 1-64
2007-09-13	1997rj7	NF	no factor TF: 1-63
2004-05-11	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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