Q: What are the prime factors of the number 8,357,685?

 A: 3, 5, 7, 83, 137

Why are those the prime factors of the number 8,357,685?

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 8,357,685

8,357,685
Factor Arrows
32,785,895
Factor Arrows
5557,179
Factor Arrows
779,597
Factor Arrows
711,371
Factor Arrows
83137

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, 5, 7, 83, 137

We can check our work by multiplying all of the prime factors together: 3 x 5 x 7 x 7 x 83 x 137 = 8,357,685

This can also be written as 31 x 51 x 72 x 831 x 1371 = 8,357,685

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


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