Q: What are the prime factors of the number 11,133,472?

 A: 2, 7, 23, 2161

Why are those the prime factors of the number 11,133,472?

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 11,133,472

11,133,472
Factor Arrows
25,566,736
Factor Arrows
22,783,368
Factor Arrows
21,391,684
Factor Arrows
2695,842
Factor Arrows
2347,921
Factor Arrows
749,703
Factor Arrows
232,161

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, 7, 23, 2161

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 23 x 2,161 = 11,133,472

This can also be written as 25 x 71 x 231 x 2,1611 = 11,133,472

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


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