+2353 They probably mean writing a number as a product of it's prime factors.
Remember that prime numbers are numbers that can only be divided by itself and 1.
Now every number that is not a prime number can therefore be written as a product of two or more prime numbers. (Since it is the opposite of a prime number). For example 9 = 3*3, 14 = 7*2 and 18 = 3*3*2
I think this page describes accurately how to find the prime factors of a number; http://mathforum.org/library/drmath/view/58534.html
Tell me if this helped in finding your answer.
Otherwise, if you tell us which number you want to write as a product of it's prime factors we'll give you an example.
Reinout-g 
+2353 They probably mean writing a number as a product of it's prime factors.
Remember that prime numbers are numbers that can only be divided by itself and 1.
Now every number that is not a prime number can therefore be written as a product of two or more prime numbers. (Since it is the opposite of a prime number). For example 9 = 3*3, 14 = 7*2 and 18 = 3*3*2
I think this page describes accurately how to find the prime factors of a number; http://mathforum.org/library/drmath/view/58534.html
Tell me if this helped in finding your answer.
Otherwise, if you tell us which number you want to write as a product of it's prime factors we'll give you an example.
Reinout-g
