Q: What are the prime factors of the number 16,923,249?

 A: 3, 7, 9949

Why are those the prime factors of the number 16,923,249?

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 16,923,249

16,923,249
Factor Arrows
35,641,083
Factor Arrows
31,880,361
Factor Arrows
3626,787
Factor Arrows
3208,929
Factor Arrows
369,643
Factor Arrows
79,949

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, 9949

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 7 x 9,949 = 16,923,249

This can also be written as 35 x 71 x 9,9491 = 16,923,249

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


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