Q: What are the prime factors of the number 517,617,728?

 A: 2, 101, 80077

Why are those the prime factors of the number 517,617,728?

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 517,617,728

517,617,728
Factor Arrows
2258,808,864
Factor Arrows
2129,404,432
Factor Arrows
264,702,216
Factor Arrows
232,351,108
Factor Arrows
216,175,554
Factor Arrows
28,087,777
Factor Arrows
10180,077

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, 101, 80077

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 101 x 80,077 = 517,617,728

This can also be written as 26 x 1011 x 80,0771 = 517,617,728

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


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