Q: What are the prime factors of the number 231,225,216?

 A: 2, 3, 251, 2399

Why are those the prime factors of the number 231,225,216?

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 231,225,216

231,225,216
Factor Arrows
2115,612,608
Factor Arrows
257,806,304
Factor Arrows
228,903,152
Factor Arrows
214,451,576
Factor Arrows
27,225,788
Factor Arrows
23,612,894
Factor Arrows
21,806,447
Factor Arrows
3602,149
Factor Arrows
2512,399

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:

2, 3, 251, 2399

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 251 x 2,399 = 231,225,216

This can also be written as 27 x 31 x 2511 x 2,3991 = 231,225,216

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


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