Q: What are the prime factors of the number 31,962,816?

 A: 2, 3, 53, 349

Why are those the prime factors of the number 31,962,816?

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 31,962,816

31,962,816
Factor Arrows
215,981,408
Factor Arrows
27,990,704
Factor Arrows
23,995,352
Factor Arrows
21,997,676
Factor Arrows
2998,838
Factor Arrows
2499,419
Factor Arrows
3166,473
Factor Arrows
355,491
Factor Arrows
318,497
Factor Arrows
53349

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, 53, 349

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 3 x 3 x 3 x 53 x 349 = 31,962,816

This can also be written as 26 x 33 x 531 x 3491 = 31,962,816

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


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