L1-3 Notes:

1
Chapter 1

• L1-3 Notes
• Prime Factors

2
Concept Summary
Number Definition Examples
Prime A whole number that has exactly two factors, 1 and the number itself. 11, 13, 23
Composite A number greater than 1 with more than two factors. 6, 10, 18
Neither Prime nor Composite 1 has only one factor. 0 has an infinite number of factors. 0 and 1
3
Examples

• Tell whether each number is prime, composite, or
  neither.
• 10
• 3
• 1
• 61

4
Prime Factorization

• Every composite number can be expressed as a
  product of prime numbers. A factor tree can be
  used to find the prime factorization of a number.

              
5
Prime Factorization

• Find the Prime Factorization of each number.
• 36
• 81
• 65
• 19