Q: What are the prime factors of the number 22,031,328?

 A: 2, 3, 11, 31, 673

Why are those the prime factors of the number 22,031,328?

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 22,031,328

22,031,328
Factor Arrows
211,015,664
Factor Arrows
25,507,832
Factor Arrows
22,753,916
Factor Arrows
21,376,958
Factor Arrows
2688,479
Factor Arrows
3229,493
Factor Arrows
1120,863
Factor Arrows
31673

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, 11, 31, 673

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 11 x 31 x 673 = 22,031,328

This can also be written as 25 x 31 x 111 x 311 x 6731 = 22,031,328

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


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