Keyword Analysis & Research: is this a valid credit card number

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
is this a valid credit card number	0.66	0.6	4122	42	34
is	1.08	1	7241	52	2
this	1.93	0.6	6153	21	4
a	0.15	0.5	2175	42	1
valid	0.4	0.7	8597	91	5
credit	0.56	0.6	4373	53	6
card	1.56	1	3026	85	4
number	0.63	0.4	2119	80	6

Keyword	CPC	PCC	Volume	Score
is this a valid credit card number	1.75	0.2	607	67