Q: What are the prime factors of the number 502,115,724?

 A: 2, 3, 11, 59, 21491

Why are those the prime factors of the number 502,115,724?

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 502,115,724

502,115,724
Factor Arrows
2251,057,862
Factor Arrows
2125,528,931
Factor Arrows
341,842,977
Factor Arrows
313,947,659
Factor Arrows
111,267,969
Factor Arrows
5921,491

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, 59, 21491

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 11 x 59 x 21,491 = 502,115,724

This can also be written as 22 x 32 x 111 x 591 x 21,4911 = 502,115,724

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


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