Q: What are the prime factors of the number 16,388,608?

 A: 2, 32009

Why are those the prime factors of the number 16,388,608?

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 16,388,608

16,388,608
Factor Arrows
28,194,304
Factor Arrows
24,097,152
Factor Arrows
22,048,576
Factor Arrows
21,024,288
Factor Arrows
2512,144
Factor Arrows
2256,072
Factor Arrows
2128,036
Factor Arrows
264,018
Factor Arrows
232,009

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, 32009

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 32,009 = 16,388,608

This can also be written as 29 x 32,0091 = 16,388,608

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


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