Q: What are the prime factors of the number 22,115,232?

 A: 2, 3, 17, 4517

Why are those the prime factors of the number 22,115,232?

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 22,115,232

22,115,232
Factor Arrows
211,057,616
Factor Arrows
25,528,808
Factor Arrows
22,764,404
Factor Arrows
21,382,202
Factor Arrows
2691,101
Factor Arrows
3230,367
Factor Arrows
376,789
Factor Arrows
174,517

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, 4517

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 3 x 17 x 4,517 = 22,115,232

This can also be written as 25 x 32 x 171 x 4,5171 = 22,115,232

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


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