1. Prime Factorization
By Mrs. Muller

2. Key Vocabulary
Factor: a whole number that divides another number with a remainder of 0.
Composite Number: a whole number greater than 1 with more than two factors.
Prime Number: a whole number with exactly two factors 1 and the number itself.
Prime factorization: a composite number written as a product of prime numbers.

3. Writing Prime Factorization
We do this by using a method called the factor tree.
The original number is the tree and the numbers coming out of it is its roots.
Example: 125
125 5 25 5 5
The prime factors are the final breakdown (the last row in each break): 5x5x5 or simply put 53

4. Example
150
150 10 15 2 5 3 5
Answer: 5x3x5x2 or 52x3x2