Q: What are the prime factors of the number 717,280,515?

 A: 3, 5, 7, 503

Why are those the prime factors of the number 717,280,515?

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 717,280,515

717,280,515
Factor Arrows
3239,093,505
Factor Arrows
379,697,835
Factor Arrows
326,565,945
Factor Arrows
38,855,315
Factor Arrows
51,771,063
Factor Arrows
7253,009
Factor Arrows
503503

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, 503

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 5 x 7 x 503 x 503 = 717,280,515

This can also be written as 34 x 51 x 71 x 5032 = 717,280,515

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


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