Q: What are the prime factors of the number 13,321,344?

 A: 2, 3, 113, 307

Why are those the prime factors of the number 13,321,344?

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 13,321,344

13,321,344
Factor Arrows
26,660,672
Factor Arrows
23,330,336
Factor Arrows
21,665,168
Factor Arrows
2832,584
Factor Arrows
2416,292
Factor Arrows
2208,146
Factor Arrows
2104,073
Factor Arrows
334,691
Factor Arrows
113307

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, 113, 307

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 3 x 113 x 307 = 13,321,344

This can also be written as 27 x 31 x 1131 x 3071 = 13,321,344

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


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