Q: What are the prime factors of the number 20,125,017?

 A: 3, 11, 7529

Why are those the prime factors of the number 20,125,017?

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 20,125,017

20,125,017
Factor Arrows
36,708,339
Factor Arrows
32,236,113
Factor Arrows
3745,371
Factor Arrows
3248,457
Factor Arrows
382,819
Factor Arrows
117,529

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:

3, 11, 7529

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 11 x 7,529 = 20,125,017

This can also be written as 35 x 111 x 7,5291 = 20,125,017

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


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