15 is a composite number because it has more than two factors. Its factors are 1, 3, 5, and 15.
15 is a composite number as it is divisible by 1, 3, 5 and 15.
composite. 3*5=15
15 is a composite number because it has more than 2 factors
15 is composite.
2 is a prime number and 15 is a composite number.
47 is a prime, the other two are composite.
composite
Composite.
15 is not prime. 15 = 3 * 5, so 15 is composite.
3 is prime 15 is composite
no it is composite
prime
Composite
15 is a composite number. 11 is a prime number.
84/15=5.6 5.6 is not an integer, so it can't be prime or composite.