Q: What are the prime factors of the number 14,336?

 A: 2, 7

Why are those the prime factors of the number 14,336?

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 14,336

14,336
Factor Arrows
27,168
Factor Arrows
23,584
Factor Arrows
21,792
Factor Arrows
2896
Factor Arrows
2448
Factor Arrows
2224
Factor Arrows
2112
Factor Arrows
256
Factor Arrows
228
Factor Arrows
214
Factor Arrows
27

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, 7

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 2 x 2 x 7 = 14,336

This can also be written as 211 x 71 = 14,336

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


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