Q: What are the prime factors of the number 206,388?

 A: 2, 3, 7, 13

Why are those the prime factors of the number 206,388?

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 206,388

206,388
Factor Arrows
2103,194
Factor Arrows
251,597
Factor Arrows
317,199
Factor Arrows
35,733
Factor Arrows
31,911
Factor Arrows
3637
Factor Arrows
791
Factor Arrows
713

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, 13

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 7 x 7 x 13 = 206,388

This can also be written as 22 x 34 x 72 x 131 = 206,388

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


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