Q: What are the prime factors of the number 13,380,066?

 A: 2, 3, 7, 19, 23

Why are those the prime factors of the number 13,380,066?

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 13,380,066

13,380,066
Factor Arrows
26,690,033
Factor Arrows
32,230,011
Factor Arrows
3743,337
Factor Arrows
3247,779
Factor Arrows
382,593
Factor Arrows
327,531
Factor Arrows
39,177
Factor Arrows
33,059
Factor Arrows
7437
Factor Arrows
1923

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, 7, 19, 23

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 7 x 19 x 23 = 13,380,066

This can also be written as 21 x 37 x 71 x 191 x 231 = 13,380,066

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


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