It is19 because it has only two factors
105
19 is the prime number.
19 is prime.
19 is the prime number.
19
They are 13 and 19 which are prime numbers
19 is the prime number.
19 is prime.
19 is the prime number.
9 is the prime number.
19
19
19 is the prime number out of the provided choices.
19 is the only one that only has 1 and itself as factors. It is the prime number.
They are 13 and 19 which are prime numbers
They are 13 and 19
the prime numbers of 1-27: 2, 3, 5, 7, 11, 13, 17, 19, 23
The prime numbers from 1 to 27 are 2, 3, 5, 7, 11, 13, 17, 19, and 23.