Q: What are the prime factors of the number 16,205,072?

 A: 2, 13, 461

Why are those the prime factors of the number 16,205,072?

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 16,205,072

16,205,072
Factor Arrows
28,102,536
Factor Arrows
24,051,268
Factor Arrows
22,025,634
Factor Arrows
21,012,817
Factor Arrows
1377,909
Factor Arrows
135,993
Factor Arrows
13461

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, 13, 461

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 13 x 13 x 13 x 461 = 16,205,072

This can also be written as 24 x 133 x 4611 = 16,205,072

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


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