Q: What are the prime factors of the number 16,474,216?

 A: 2, 11, 19, 59, 167

Why are those the prime factors of the number 16,474,216?

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 16,474,216

16,474,216
Factor Arrows
28,237,108
Factor Arrows
24,118,554
Factor Arrows
22,059,277
Factor Arrows
11187,207
Factor Arrows
199,853
Factor Arrows
59167

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, 11, 19, 59, 167

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 11 x 19 x 59 x 167 = 16,474,216

This can also be written as 23 x 111 x 191 x 591 x 1671 = 16,474,216

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


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