Q: What are the prime factors of the number 215,700?

 A: 2, 3, 5, 719

Why are those the prime factors of the number 215,700?

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 215,700

215,700
Factor Arrows
2107,850
Factor Arrows
253,925
Factor Arrows
317,975
Factor Arrows
53,595
Factor Arrows
5719

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, 5, 719

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 719 = 215,700

This can also be written as 22 x 31 x 52 x 7191 = 215,700

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


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