The prime factors of 144 are: 2, 3.
http://wiki.answers.com/Q/What_is_the_prime_factor...

A positive number can have prime factors but a negative number can't.It just
http://www.chacha.com/question/whatwhatarethef...

A factor is a divisor  a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that both numbers have in common
http://wiki.answers.com/Q/What_is_the_greatest_com...

The factors of 144 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72 and 144.
http://www.chacha.com/question/whatareallthefa...
