Q: What are the prime factors of the number 17,085,205?

 A: 5, 23, 29, 47, 109

Why are those the prime factors of the number 17,085,205?

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 17,085,205

17,085,205
Factor Arrows
53,417,041
Factor Arrows
23148,567
Factor Arrows
295,123
Factor Arrows
47109

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:

5, 23, 29, 47, 109

We can check our work by multiplying all of the prime factors together: 5 x 23 x 29 x 47 x 109 = 17,085,205

This can also be written as 51 x 231 x 291 x 471 x 1091 = 17,085,205

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


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