Q: What are the prime factors of the number 518,314,368?

 A: 2, 3, 11, 13, 9439

Why are those the prime factors of the number 518,314,368?

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 518,314,368

518,314,368
Factor Arrows
2259,157,184
Factor Arrows
2129,578,592
Factor Arrows
264,789,296
Factor Arrows
232,394,648
Factor Arrows
216,197,324
Factor Arrows
28,098,662
Factor Arrows
24,049,331
Factor Arrows
31,349,777
Factor Arrows
11122,707
Factor Arrows
139,439

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, 3, 11, 13, 9439

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 2 x 3 x 11 x 13 x 9,439 = 518,314,368

This can also be written as 27 x 31 x 111 x 131 x 9,4391 = 518,314,368

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


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