21 as a Product of Prime Factors
What is 21 as a Product of Prime Factors?
First, note that in the sentence above, "product" is the result you get when you multiply numbers together to get 21.
Furthermore, "prime factors" are specifically the prime numbers that you multiply together to get 21.
All composite numbers can be written as a Product of Prime Factors and 21 is no exception.
The prime factors of 21 are 3, 7. Therefore, 21 as a Product of Prime Factors is:
3 x 7 = 21
Note that there is only one set of unique prime factors that multiply to 21.
22 as a Product of Prime Factors
Learn about the Product of Prime Factors for the next number on our list.