39 is composite because its factors are:
1x39
3x13
(1, 3, 13, 39)
39 is a composite number because it has other factors aside from 1 and itself.
The other factors of 39 are 3 and 13.
39 is prime, 9 is composite.
39 is composite.
39 is a Composite Number.
It is composite.
39 is composite
39 is a Composite Number.
39 is not a prime; it is a composite number.
43 is prime; 39 is composite.
Composite.
Both composite.
29 is prime but 39 is composite
39 is prime because no number can go into it.