Q: What are the prime factors of the number 257,910?

 A: 2, 3, 5, 8597

Why are those the prime factors of the number 257,910?

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 257,910

257,910
Factor Arrows
2128,955
Factor Arrows
342,985
Factor Arrows
58,597

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, 8597

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 8,597 = 257,910

This can also be written as 21 x 31 x 51 x 8,5971 = 257,910

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


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