It is composite.
composite
It is composite.
51 is not a prime nor is it a square number. I regret that I have no idea what "comoste" means.
51 composite, 61 prime.
51 is composite.
51 is composite, 103 is prime.
prime
prime
51 is a composite number 3 x 17 = 51
51 is a composite number but 61 is a prime number
24 and 51 are composite, 3 is prime.