Q: What are the prime factors of the number 433,920?

 A: 2, 3, 5, 113

Why are those the prime factors of the number 433,920?

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 433,920

433,920
Factor Arrows
2216,960
Factor Arrows
2108,480
Factor Arrows
254,240
Factor Arrows
227,120
Factor Arrows
213,560
Factor Arrows
26,780
Factor Arrows
23,390
Factor Arrows
21,695
Factor Arrows
3565
Factor Arrows
5113

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, 5, 113

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 113 = 433,920

This can also be written as 28 x 31 x 51 x 1131 = 433,920

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


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