because there is no factor for 1 and zero
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0 is a composite number. 5 is prime.
There are more composite numbers. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.
Composite numbers are divisible by prime numbers.
No. They should not be considered composite, nor prime numbers.
They are neither prime numbers nor composite numbers. It is because, they do not have two factors at least.