51 composite, 61 prime.
51 is composite.
51 is composite. Becasuse 17 x 3 = 51 It is two prime numbers multiplied together to make a composite.
51 is composite, 103 is prime.
prime
It is composite.
composite
It is composite.
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.
51 is divisible by 3, therefor it is composite. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1, 2, and 0. 1, 2, and 0 have a different name.