50 = 2 x 5 x 5.
http://wiki.answers.com/Q/What_the_prime_factoriza...

The prime factorization of 50 is 2 * 5^2.
http://www.chacha.com/question/whatistheprimef...

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://answers.ask.com/Science/Mathematics/what_is...

Remember a prime number is only divisible by its self and 1. a) nope, because 1 is not a prime. b) nope, because 25 is not a prime (its divisible by 5) d) nope, for reasons above.
http://answers.yahoo.com/question/index?qid=200804...
