Q: What are the prime factors of the number 305,225,525?

 A: 5, 11, 23, 41, 107

Why are those the prime factors of the number 305,225,525?

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 305,225,525

305,225,525
Factor Arrows
561,045,105
Factor Arrows
512,209,021
Factor Arrows
111,109,911
Factor Arrows
11100,901
Factor Arrows
234,387
Factor Arrows
41107

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, 23, 41, 107

We can check our work by multiplying all of the prime factors together: 5 x 5 x 11 x 11 x 23 x 41 x 107 = 305,225,525

This can also be written as 52 x 112 x 231 x 411 x 1071 = 305,225,525

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


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