Q: What are the prime factors of the number 404,028?

 A: 2, 3, 29, 43

Why are those the prime factors of the number 404,028?

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 404,028

404,028
Factor Arrows
2202,014
Factor Arrows
2101,007
Factor Arrows
333,669
Factor Arrows
311,223
Factor Arrows
33,741
Factor Arrows
31,247
Factor Arrows
2943

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, 29, 43

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 29 x 43 = 404,028

This can also be written as 22 x 34 x 291 x 431 = 404,028

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


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