Q: What are the prime factors of the number 11,831,808?

 A: 2, 3, 7703

Why are those the prime factors of the number 11,831,808?

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 11,831,808

11,831,808
Factor Arrows
25,915,904
Factor Arrows
22,957,952
Factor Arrows
21,478,976
Factor Arrows
2739,488
Factor Arrows
2369,744
Factor Arrows
2184,872
Factor Arrows
292,436
Factor Arrows
246,218
Factor Arrows
223,109
Factor Arrows
37,703

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, 7703

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 2 x 2 x 3 x 7,703 = 11,831,808

This can also be written as 29 x 31 x 7,7031 = 11,831,808

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


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