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.
The number 51 is a composite number because it has factors other than 1 and itself. Specifically, 51 can be divided evenly by 1, 3, 17, and 51. In contrast, prime numbers are only divisible by 1 and themselves.
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