Q: What are the prime factors of the number 213,192?

 A: 2, 3, 7, 47

Why are those the prime factors of the number 213,192?

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 213,192

213,192
Factor Arrows
2106,596
Factor Arrows
253,298
Factor Arrows
226,649
Factor Arrows
38,883
Factor Arrows
32,961
Factor Arrows
3987
Factor Arrows
3329
Factor Arrows
747

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, 7, 47

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 7 x 47 = 213,192

This can also be written as 23 x 34 x 71 x 471 = 213,192

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


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