Q: What are the prime factors of the number 17,177,640?

 A: 2, 3, 5, 43, 3329

Why are those the prime factors of the number 17,177,640?

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 17,177,640

17,177,640
Factor Arrows
28,588,820
Factor Arrows
24,294,410
Factor Arrows
22,147,205
Factor Arrows
3715,735
Factor Arrows
5143,147
Factor Arrows
433,329

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, 5, 43, 3329

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 43 x 3,329 = 17,177,640

This can also be written as 23 x 31 x 51 x 431 x 3,3291 = 17,177,640

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


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