Q: What are the prime factors of the number 521,525,125?

 A: 5, 11, 29, 41

Why are those the prime factors of the number 521,525,125?

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 521,525,125

521,525,125
Factor Arrows
5104,305,025
Factor Arrows
520,861,005
Factor Arrows
54,172,201
Factor Arrows
11379,291
Factor Arrows
1134,481
Factor Arrows
291,189
Factor Arrows
2941

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, 11, 29, 41

We can check our work by multiplying all of the prime factors together: 5 x 5 x 5 x 11 x 11 x 29 x 29 x 41 = 521,525,125

This can also be written as 53 x 112 x 292 x 411 = 521,525,125

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


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