60 = 2 * 2 * 3 * 5
http://wiki.answers.com/Q/What+is+the+prime+factir...

A prime factor is a number that can not be broken down into any other numbers. For example 3 is a prime factor because the only way to get three is by multiplying 3 and 1 together.
http://www.ask.com/webanswers/Science/Mathematics...

The prime factors of 215 are: 5 and 43.
http://wiki.answers.com/Q/What_are_the_prime_facto...

23 is a prime number so there is no prime facorization. Some consider it to be acceptable to write 1 X 23 in order to show the number is prime, even though 1 is not a prime or composite
http://wiki.answers.com/Q/What_is_the_prime_factor...
