A composite number is a positive integer that has at least one positive divisor other than one or itself. For example 4,6,8,9,10, 12, 14, 15, 16, 18, 20,21, 22...are composite numbers
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No it is a composite number if you want to know
Composite numbers have more than two factors. Once you find a third factor, you know your number is composite.
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To know that a number is prime you need to know that it has no factors other than 1 and the number itself.To know that a number is composite you only need to know one factor other than the number itself or 1.
It has more than two factors.