Q: What are the prime factors of the number 13,216,416?

 A: 2, 3, 31, 4441

Why are those the prime factors of the number 13,216,416?

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 13,216,416

13,216,416
Factor Arrows
26,608,208
Factor Arrows
23,304,104
Factor Arrows
21,652,052
Factor Arrows
2826,026
Factor Arrows
2413,013
Factor Arrows
3137,671
Factor Arrows
314,441

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, 31, 4441

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 31 x 4,441 = 13,216,416

This can also be written as 25 x 31 x 311 x 4,4411 = 13,216,416

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


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