Q: What are the prime factors of the number 238,700?

 A: 2, 5, 7, 11, 31

Why are those the prime factors of the number 238,700?

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 238,700

238,700
Factor Arrows
2119,350
Factor Arrows
259,675
Factor Arrows
511,935
Factor Arrows
52,387
Factor Arrows
7341
Factor Arrows
1131

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, 5, 7, 11, 31

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 7 x 11 x 31 = 238,700

This can also be written as 22 x 52 x 71 x 111 x 311 = 238,700

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


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