Q: What are the prime factors of the number 11,729,809?

 A: 7, 13, 83, 1553

Why are those the prime factors of the number 11,729,809?

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 11,729,809

11,729,809
Factor Arrows
71,675,687
Factor Arrows
13128,899
Factor Arrows
831,553

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:

7, 13, 83, 1553

We can check our work by multiplying all of the prime factors together: 7 x 13 x 83 x 1,553 = 11,729,809

This can also be written as 71 x 131 x 831 x 1,5531 = 11,729,809

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


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