Q: What are the prime factors of the number 358,938?

 A: 2, 3, 17, 23

Why are those the prime factors of the number 358,938?

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 358,938

358,938
Factor Arrows
2179,469
Factor Arrows
359,823
Factor Arrows
319,941
Factor Arrows
36,647
Factor Arrows
17391
Factor Arrows
1723

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:

2, 3, 17, 23

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 17 x 17 x 23 = 358,938

This can also be written as 21 x 33 x 172 x 231 = 358,938

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


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