The only factors of 53 are 1 and 53. That's what makes it prime.
13 and 7
13 is a Prime number because it has only two factors which are itself and one.
65 = 13*5, 13 and 5 are prime numbers
The only numbers that divide 13 evenly (the factors of 13) are 1 and 13.This makes 13 a prime number.
Prime factors of 1729: are 7, 13 and 19 which makes three of them
1 and 13. 13 is prime.
13 is a prime, so its prime factorization is: 13
13 is a prime number
Prime factorization of 26 makes it much clear. 26 = 2x13. Both 13 and 2 go into 26.
13 is a Prime number.
13 is prime.