Q: What are the prime factors of the number 225,223,530?

 A: 2, 3, 5, 7, 19, 47, 1201

Why are those the prime factors of the number 225,223,530?

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 225,223,530

225,223,530
Factor Arrows
2112,611,765
Factor Arrows
337,537,255
Factor Arrows
57,507,451
Factor Arrows
71,072,493
Factor Arrows
1956,447
Factor Arrows
471,201

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, 5, 7, 19, 47, 1201

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 7 x 19 x 47 x 1,201 = 225,223,530

This can also be written as 21 x 31 x 51 x 71 x 191 x 471 x 1,2011 = 225,223,530

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


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