Q: What are the prime factors of the number 13,726,503?

 A: 3, 7, 43, 563

Why are those the prime factors of the number 13,726,503?

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 13,726,503

13,726,503
Factor Arrows
34,575,501
Factor Arrows
31,525,167
Factor Arrows
3508,389
Factor Arrows
3169,463
Factor Arrows
724,209
Factor Arrows
43563

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, 7, 43, 563

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 7 x 43 x 563 = 13,726,503

This can also be written as 34 x 71 x 431 x 5631 = 13,726,503

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


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