Q: What are the prime factors of the number 17,636,745?

 A: 3, 5, 7, 23, 67, 109

Why are those the prime factors of the number 17,636,745?

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 17,636,745

17,636,745
Factor Arrows
35,878,915
Factor Arrows
51,175,783
Factor Arrows
7167,969
Factor Arrows
237,303
Factor Arrows
67109

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, 5, 7, 23, 67, 109

We can check our work by multiplying all of the prime factors together: 3 x 5 x 7 x 23 x 67 x 109 = 17,636,745

This can also be written as 31 x 51 x 71 x 231 x 671 x 1091 = 17,636,745

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


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