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Express the number as a product of its factors.
\The factors of 63:
\63 = 1 × 63.
\63 = 3 × 21.
\63 = 7 × 9.
\Factors of 63 are 1, 3, 7, 9, 21 and 63. Since the number has more than two factors, it is composite.
\![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The number 63 is a composite number.
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