18 is composite. Its factors are: 1, 2, 3, 6, 9 and 18.
prime
5 is prime
Prime.
29 is a prime number.
67 is a prime number.
89 is a prime number.
It is composite.
Composite.
Composite
37 is the 12th prime number.
47 is a prime number.
5 is a prime number.