19 is the prime number.
19 is the prime number.
19
It is19 because it has only two factors
They are 13 and 19 which are prime numbers
19 is the prime number.
19 is the prime number.
9 is the prime number.
19 is the prime number out of the provided choices.
19
19
19 is the only one that only has 1 and itself as factors. It is the prime number.
Any number whose digits total 3, 6 or 9 is divisible by 3 and, therefore, not prime.
It is19 because it has only two factors
19 is prime.
They are 13 and 19 which are prime numbers
It is 1 because 19 is a prime number