Q: What are the prime factors of the number 16,731,792?

 A: 2, 3, 7, 11, 503

Why are those the prime factors of the number 16,731,792?

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 16,731,792

16,731,792
Factor Arrows
28,365,896
Factor Arrows
24,182,948
Factor Arrows
22,091,474
Factor Arrows
21,045,737
Factor Arrows
3348,579
Factor Arrows
3116,193
Factor Arrows
338,731
Factor Arrows
75,533
Factor Arrows
11503

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, 3, 7, 11, 503

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 7 x 11 x 503 = 16,731,792

This can also be written as 24 x 33 x 71 x 111 x 5031 = 16,731,792

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


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