Q: What are the prime factors of the number 250,857?

 A: 3, 19, 163

Why are those the prime factors of the number 250,857?

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 250,857

250,857
Factor Arrows
383,619
Factor Arrows
327,873
Factor Arrows
39,291
Factor Arrows
33,097
Factor Arrows
19163

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:

3, 19, 163

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 19 x 163 = 250,857

This can also be written as 34 x 191 x 1631 = 250,857

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


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