Q: What are the prime factors of the number 521,525?

 A: 5, 23, 907

Why are those the prime factors of the number 521,525?

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 521,525

521,525
Factor Arrows
5104,305
Factor Arrows
520,861
Factor Arrows
23907

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, 23, 907

We can check our work by multiplying all of the prime factors together: 5 x 5 x 23 x 907 = 521,525

This can also be written as 52 x 231 x 9071 = 521,525

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


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