Q: What are the prime factors of the number 56,789,208?

 A: 2, 3, 7, 23, 71

Why are those the prime factors of the number 56,789,208?

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 56,789,208

56,789,208
Factor Arrows
228,394,604
Factor Arrows
214,197,302
Factor Arrows
27,098,651
Factor Arrows
32,366,217
Factor Arrows
3788,739
Factor Arrows
3262,913
Factor Arrows
737,559
Factor Arrows
231,633
Factor Arrows
2371

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, 7, 23, 71

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 7 x 23 x 23 x 71 = 56,789,208

This can also be written as 23 x 33 x 71 x 232 x 711 = 56,789,208

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


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