Q: What are the prime factors of the number 70,816,761?

 A: 3, 113, 2579

Why are those the prime factors of the number 70,816,761?

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 70,816,761

70,816,761
Factor Arrows
323,605,587
Factor Arrows
37,868,529
Factor Arrows
32,622,843
Factor Arrows
3874,281
Factor Arrows
3291,427
Factor Arrows
1132,579

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, 113, 2579

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 113 x 2,579 = 70,816,761

This can also be written as 35 x 1131 x 2,5791 = 70,816,761

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


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