How to find the prime factorization of 65

5 x 13

65 x 1

This isn't the only factorization, there's also the 65 and 1.

The prime factorization of 65 is 5 x 13. Five and 13 are not just the only prime factors of 65, but they are also the only factors of this number other than 1 and 65. A prime number is one that has no factors other than itself and 1.