Chapter 5 - Number Theory and the Real Number System - 5.1 Number Theory: Prime and Composite Numbers - Exercise Set 5.1 - Page 257: 103

The Fundamental Theorem of Arithmetic states that a composite number can be factored using prime numbers in only one way (order of the factors does not matter).

The Fundamental Theorem of Arithmetic states that a composite number can be factored (or expressed as a product of) using prime numbers in only one way (where order of the factors does not matter). This means that every composite number has a unique set of prime factors.