Q: What are the prime factors of the number 225,153,432?

 A: 2, 3, 7, 1013

Why are those the prime factors of the number 225,153,432?

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 225,153,432

225,153,432
Factor Arrows
2112,576,716
Factor Arrows
256,288,358
Factor Arrows
228,144,179
Factor Arrows
39,381,393
Factor Arrows
33,127,131
Factor Arrows
31,042,377
Factor Arrows
3347,459
Factor Arrows
749,637
Factor Arrows
77,091
Factor Arrows
71,013

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, 7, 1013

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 7 x 7 x 7 x 1,013 = 225,153,432

This can also be written as 23 x 34 x 73 x 1,0131 = 225,153,432

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


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