A factor that is a prime number.

In other words: any of the prime numbers that can be multiplied to give the original number.

Example: The prime factors of 15 are 3 and 5 (because 3×5=15, and 3 and 5 are prime numbers).

In other words: any of the prime numbers that can be multiplied to give the original number.

Example: The prime factors of 15 are 3 and 5 (because 3×5=15, and 3 and 5 are prime numbers).

See: Prime Number

Copyright © 2018 MathsIsFun.com