Q: What are the prime factors of the number 20,097?

 A: 3, 7, 11, 29

Why are those the prime factors of the number 20,097?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 20,097

20,097
Factor Arrows
36,699
Factor Arrows
32,233
Factor Arrows
7319
Factor Arrows
1129

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

3, 7, 11, 29

We can check our work by multiplying all of the prime factors together: 3 x 3 x 7 x 11 x 29 = 20,097

This can also be written as 32 x 71 x 111 x 291 = 20,097

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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