Q: What are the prime factors of the number 16,853,872?

 A: 2, 7, 29, 5189

Why are those the prime factors of the number 16,853,872?

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 16,853,872

16,853,872
Factor Arrows
28,426,936
Factor Arrows
24,213,468
Factor Arrows
22,106,734
Factor Arrows
21,053,367
Factor Arrows
7150,481
Factor Arrows
295,189

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, 7, 29, 5189

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 29 x 5,189 = 16,853,872

This can also be written as 24 x 71 x 291 x 5,1891 = 16,853,872

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


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