Q: What are the prime factors of the number 4,891,816?

 A: 2, 19, 32183

Why are those the prime factors of the number 4,891,816?

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 4,891,816

4,891,816
Factor Arrows
22,445,908
Factor Arrows
21,222,954
Factor Arrows
2611,477
Factor Arrows
1932,183

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, 19, 32183

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 19 x 32,183 = 4,891,816

This can also be written as 23 x 191 x 32,1831 = 4,891,816

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


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