Q: What are the prime factors of the number 17,890,678?

 A: 2, 13, 41, 1291

Why are those the prime factors of the number 17,890,678?

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 17,890,678

17,890,678
Factor Arrows
28,945,339
Factor Arrows
13688,103
Factor Arrows
1352,931
Factor Arrows
411,291

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, 13, 41, 1291

We can check our work by multiplying all of the prime factors together: 2 x 13 x 13 x 41 x 1,291 = 17,890,678

This can also be written as 21 x 132 x 411 x 1,2911 = 17,890,678

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


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