Q: What are the prime factors of the number 782,618,031?

 A: 3, 13, 439, 1693

Why are those the prime factors of the number 782,618,031?

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 782,618,031

782,618,031
Factor Arrows
3260,872,677
Factor Arrows
386,957,559
Factor Arrows
328,985,853
Factor Arrows
39,661,951
Factor Arrows
13743,227
Factor Arrows
4391,693

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:

3, 13, 439, 1693

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 13 x 439 x 1,693 = 782,618,031

This can also be written as 34 x 131 x 4391 x 1,6931 = 782,618,031

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


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