31 is a Prime number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.
31 is prime. 32 and 33 are composite.
31 is prime.
31 is prime.
Prime; Are, 2,3,5,7,11,13,17,19,23,29
31 is a prime number because it is only divisible by 1 and itself.
An integer greater than 1 can be composite or prime but not both. So 31 cannot be a composite prime.
31 is PRIME.
31 is prime.
31 is prime. 32 and 33 are composite.
31 is prime.
4 is composite, 31 is prime.
31 is a prime number.
31 is prime.
31 is prime.
31 is a prime number
31, 47 and 103 are prime. The rest are composite.
is 2 prime composite or square