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=1515 is a composite number because it has more than 2 factors
It is composite because it has more than 2 factors
15 is composite.
47 is a prime, the other two are composite.
2/5 are prime, 8/15 are composite (and 1/15 is neither).
composite
Composite.
3 is prime 15 is composite
prime
no it is composite
1, 2, 3, 5, 6, 10, 15, 30, composite
30 and 15 are both 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 have a different name.