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. 539 is composite.
Prime
103 is a prime number.
1 is a prime number.
5x3x29
It is a composite number.
85 is composite.
21 is a composite number.
21 is a composite number.
75 is a Composite Number.
63 is a Composite Number.
180 is a Composite Number.
compostie