Q: What are the prime factors of the number 786,712,765?

 A: 5, 19, 191, 227

Why are those the prime factors of the number 786,712,765?

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 786,712,765

786,712,765
Factor Arrows
5157,342,553
Factor Arrows
198,281,187
Factor Arrows
19143,357
Factor Arrows
191227

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:

5, 19, 191, 227

We can check our work by multiplying all of the prime factors together: 5 x 19 x 191 x 191 x 227 = 786,712,765

This can also be written as 51 x 191 x 1912 x 2271 = 786,712,765

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


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