31 is prime.
31 is a prime number
31 and 61 are prime, the rest composite.
31 is a prime number because it has only two factors which are itself and one
39 is a composite number 1 is neither prime nor composite number 31 and 41 are prime numbers.
neither prime or composite
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 a prime number because it has only two factors which are itself and one
155 is a composite number. Its factors are 1, 5, 31, and 155.
Yes it is, The only divisors of 31 are 1 and 31 so it is prime.Yes.31 is prime, yes
31 is a prime number because it is only divisible by 1 and itself.
It is 1 that is neither a prime or a composite number The number 1 is neither prime nor composite.