Q: What are the prime factors of the number 18,479,552?

 A: 2, 7, 13, 19, 167

Why are those the prime factors of the number 18,479,552?

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 18,479,552

18,479,552
Factor Arrows
29,239,776
Factor Arrows
24,619,888
Factor Arrows
22,309,944
Factor Arrows
21,154,972
Factor Arrows
2577,486
Factor Arrows
2288,743
Factor Arrows
741,249
Factor Arrows
133,173
Factor Arrows
19167

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, 13, 19, 167

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 7 x 13 x 19 x 167 = 18,479,552

This can also be written as 26 x 71 x 131 x 191 x 1671 = 18,479,552

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


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