Q: What are the prime factors of the number 255,565?

 A: 5, 79, 647

Why are those the prime factors of the number 255,565?

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 255,565

255,565
Factor Arrows
551,113
Factor Arrows
79647

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:

5, 79, 647

We can check our work by multiplying all of the prime factors together: 5 x 79 x 647 = 255,565

This can also be written as 51 x 791 x 6471 = 255,565

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


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