Q: What are the prime factors of the number 11,228,840?

 A: 2, 5, 7, 17, 337

Why are those the prime factors of the number 11,228,840?

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 11,228,840

11,228,840
Factor Arrows
25,614,420
Factor Arrows
22,807,210
Factor Arrows
21,403,605
Factor Arrows
5280,721
Factor Arrows
740,103
Factor Arrows
75,729
Factor Arrows
17337

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, 5, 7, 17, 337

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 7 x 7 x 17 x 337 = 11,228,840

This can also be written as 23 x 51 x 72 x 171 x 3371 = 11,228,840

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


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