160 is a composite no. and 19 is a prime no.
19 is prime, 1 is neither prime nor composite.
prime
One is prime, the other two are composite.
19 is prime.
It is a prime.
19 is prime the only numebr that is neither prime or composite is 1
Prime
Is 19 a composite or prime factor
21 is composite. 19 and 23 are prime.
It is composite. 95 = 19*5
19 and 23 are prime numbers whereas 21 is a composite number