31 is a prime number. It has no positive integer factors apart from itself and 1.
279 is a composite number. Its positive integer factors are: 1, 3, 9, 31, 93, 279
31 is prime.
31 is prime.
Prime; Are, 2,3,5,7,11,13,17,19,23,29
An integer greater than 1 can be composite or prime but not both. So 31 cannot be a composite prime.
31 is a prime number. It has no positive integer factors apart from itself and 1.
279 is a composite number. Its positive integer factors are: 1, 3, 9, 31, 93, 279
465 is a composite number. Its positive integer factors are: 1, 3, 5, 15, 31, 93, 155, 465
31 is PRIME.
31 is prime.
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