composite number. 9x7=63
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63 is a composite number
It is a composite number.
63 is a Composite Number.
It is not a prime nor a coposite. It is a composite number, though.
13 prime 63 composite 61 prime 31 prime Well the question should have been either, Which one of these numbers is not a composite number? Or, Which one of these numbers is not a prime number?