Q: What are the prime factors of the number 686,840,804?

 A: 2, 13, 19, 101, 6883

Why are those the prime factors of the number 686,840,804?

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 686,840,804

686,840,804
Factor Arrows
2343,420,402
Factor Arrows
2171,710,201
Factor Arrows
1313,208,477
Factor Arrows
19695,183
Factor Arrows
1016,883

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, 13, 19, 101, 6883

We can check our work by multiplying all of the prime factors together: 2 x 2 x 13 x 19 x 101 x 6,883 = 686,840,804

This can also be written as 22 x 131 x 191 x 1011 x 6,8831 = 686,840,804

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


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