prime
Prime.
5 is prime
89 is a prime number.
29 is a prime number.
67 is a prime number.
Composite
Composite.
It is composite.
20 cannot be prime because prime numbers will only have a factor 1, whereas 20 has: 1 x 20 2 x 10 4 x 5 Thus 20 is composite
37 is the 12th prime number.
47 is a prime number.