Q: What are the prime factors of the number 22,491,216?

 A: 2, 3, 11, 4733

Why are those the prime factors of the number 22,491,216?

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 22,491,216

22,491,216
Factor Arrows
211,245,608
Factor Arrows
25,622,804
Factor Arrows
22,811,402
Factor Arrows
21,405,701
Factor Arrows
3468,567
Factor Arrows
3156,189
Factor Arrows
352,063
Factor Arrows
114,733

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, 4733

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 11 x 4,733 = 22,491,216

This can also be written as 24 x 33 x 111 x 4,7331 = 22,491,216

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


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