Q: What are the prime factors of the number 18,320,808?

 A: 2, 3, 11, 29, 2393

Why are those the prime factors of the number 18,320,808?

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 18,320,808

18,320,808
Factor Arrows
29,160,404
Factor Arrows
24,580,202
Factor Arrows
22,290,101
Factor Arrows
3763,367
Factor Arrows
1169,397
Factor Arrows
292,393

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, 29, 2393

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 11 x 29 x 2,393 = 18,320,808

This can also be written as 23 x 31 x 111 x 291 x 2,3931 = 18,320,808

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


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