1. Prime Factorization

2. What are factors?
Factors are whole numbers multiplied together to make a product. (A number is divisible by its factors.) 2 x 3 = 6 product factors

3. Example 1: List all the factors of each number.18
1 x 18 Start by listing all
2 x 9 the pairs of factors
3 x 6
The factors of 18 are:
1, 2, 3, 6, 9, and 18

4. Example 1: List all the factors of each number.13
1 x 13 Start by listing all
the pairs of factors
The factors of 13 are:
1 and 13, which makes 13 a prime number

5. What is prime factorization?
The prime factorization of a number is the number written as the product of its prime factors.

6. Example 2: Write the prime factorization of each number.
Use a factor tree:
36 *Start with any two factors you think of
* then keep using
factors until you get
only primes
The prime factorization of 36 is: 22.32

7. Example 2: Write the prime factorization of each number.
(B) Use a ladder diagram: 2 I 54 * Start with the 3 I 27 smallest 3 I 9 prime and 3 divide The prime factorization of 54 is: =