Q: What are the prime factors of the number 257,580?

 A: 2, 3, 5, 53

Why are those the prime factors of the number 257,580?

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 257,580

257,580
Factor Arrows
2128,790
Factor Arrows
264,395
Factor Arrows
321,465
Factor Arrows
37,155
Factor Arrows
32,385
Factor Arrows
3795
Factor Arrows
3265
Factor Arrows
553

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, 53

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 3 x 5 x 53 = 257,580

This can also be written as 22 x 35 x 51 x 531 = 257,580

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


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