Q: What are the prime factors of the number 79,344?

 A: 2, 3, 19, 29

Why are those the prime factors of the number 79,344?

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 79,344

79,344
Factor Arrows
239,672
Factor Arrows
219,836
Factor Arrows
29,918
Factor Arrows
24,959
Factor Arrows
31,653
Factor Arrows
3551
Factor Arrows
1929

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, 19, 29

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 19 x 29 = 79,344

This can also be written as 24 x 32 x 191 x 291 = 79,344

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


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