Q: What are the prime factors of the number 503,547,816?

 A: 2, 3, 191, 109849

Why are those the prime factors of the number 503,547,816?

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 503,547,816

503,547,816
Factor Arrows
2251,773,908
Factor Arrows
2125,886,954
Factor Arrows
262,943,477
Factor Arrows
320,981,159
Factor Arrows
191109,849

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, 191, 109849

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 191 x 109,849 = 503,547,816

This can also be written as 23 x 31 x 1911 x 109,8491 = 503,547,816

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


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