Q: What are the prime factors of the number 7,013,216?

 A: 2, 7, 131, 239

Why are those the prime factors of the number 7,013,216?

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 7,013,216

7,013,216
Factor Arrows
23,506,608
Factor Arrows
21,753,304
Factor Arrows
2876,652
Factor Arrows
2438,326
Factor Arrows
2219,163
Factor Arrows
731,309
Factor Arrows
131239

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, 131, 239

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 131 x 239 = 7,013,216

This can also be written as 25 x 71 x 1311 x 2391 = 7,013,216

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


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