Q: What are the prime factors of the number 10,161,216?

 A: 2, 3, 13, 23, 59

Why are those the prime factors of the number 10,161,216?

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 10,161,216

10,161,216
Factor Arrows
25,080,608
Factor Arrows
22,540,304
Factor Arrows
21,270,152
Factor Arrows
2635,076
Factor Arrows
2317,538
Factor Arrows
2158,769
Factor Arrows
352,923
Factor Arrows
317,641
Factor Arrows
131,357
Factor Arrows
2359

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, 13, 23, 59

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 3 x 3 x 13 x 23 x 59 = 10,161,216

This can also be written as 26 x 32 x 131 x 231 x 591 = 10,161,216

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


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