Q: What are the prime factors of the number 231,885,225?

 A: 3, 5, 11, 13, 7207

Why are those the prime factors of the number 231,885,225?

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 231,885,225

231,885,225
Factor Arrows
377,295,075
Factor Arrows
325,765,025
Factor Arrows
55,153,005
Factor Arrows
51,030,601
Factor Arrows
1193,691
Factor Arrows
137,207

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:

3, 5, 11, 13, 7207

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 5 x 11 x 13 x 7,207 = 231,885,225

This can also be written as 32 x 52 x 111 x 131 x 7,2071 = 231,885,225

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


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