Q: What are the prime factors of the number 717,278,072?

 A: 2, 7, 1051, 1741

Why are those the prime factors of the number 717,278,072?

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 717,278,072

717,278,072
Factor Arrows
2358,639,036
Factor Arrows
2179,319,518
Factor Arrows
289,659,759
Factor Arrows
712,808,537
Factor Arrows
71,829,791
Factor Arrows
1,0511,741

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, 7, 1051, 1741

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 7 x 1,051 x 1,741 = 717,278,072

This can also be written as 23 x 72 x 1,0511 x 1,7411 = 717,278,072

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


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