55 329 301 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 =	655000
B2 =	18831250

Status	Date	User	Residue	Shift	Software
Verified	2014-08-13	ANONYMOUS	BC7C2189EE42D81C	43778412	Windows 64-bit,Prime95,v28.5,build 2
Verified	2021-03-15	Dubslow	BC7C2189EE42D81C	17730227	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2021-03-15	Dubslow	C-LL	BC7C2189EE42D81C
2014-08-13	ANONYMOUS	C-LL	BC7C2189EE42D81C
2014-08-03	Jerry Hallett	NF	no factor TF: 73-74
2014-02-15	ktony	NF	no factor TF: 72-73
2012-05-08	Craig Meyers	NF	no factor TF: 71-72
2012-01-24	Kyle Askine	NF	no factor TF: 70-71
2011-12-31	Craig Meyers	NF	no factor TF: 69-70
2011-10-27	KC	NF-PM1	B1=655000, B2=18831250, E=12
2011-06-26	megavink	NF	no factor TF: 68-69
2011-06-16	blimey	NF	no factor TF: 68-69
2010-01-23	korva	NF	no factor TF: 67-68
2010-01-20	korva	NF	no factor TF: 66-67
2010-01-18	arnaud	NF	no factor TF: 65-66
2009-11-29	Rob_Dee	NF	no factor TF: 64-65
2008-11-17	1997rj7	NF	no factor TF: 1-64
2002-07-14	-anonymous-	NF	no factor TF: 1-58
2001-09-16	-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
1999-12-15	-anonymous-	NF	no factor TF: 1-53

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