Q: What are the prime factors of the number 213,312?

 A: 2, 3, 11, 101

Why are those the prime factors of the number 213,312?

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 213,312

213,312
Factor Arrows
2106,656
Factor Arrows
253,328
Factor Arrows
226,664
Factor Arrows
213,332
Factor Arrows
26,666
Factor Arrows
23,333
Factor Arrows
31,111
Factor Arrows
11101

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, 11, 101

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 3 x 11 x 101 = 213,312

This can also be written as 26 x 31 x 111 x 1011 = 213,312

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


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