Q: What are the prime factors of the number 18,472,914?

 A: 2, 3, 17, 20123

Why are those the prime factors of the number 18,472,914?

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 18,472,914

18,472,914
Factor Arrows
29,236,457
Factor Arrows
33,078,819
Factor Arrows
31,026,273
Factor Arrows
3342,091
Factor Arrows
1720,123

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, 17, 20123

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 17 x 20,123 = 18,472,914

This can also be written as 21 x 33 x 171 x 20,1231 = 18,472,914

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


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