Q: What are the prime factors of the number 321,134,112?

 A: 2, 3, 13, 28591

Why are those the prime factors of the number 321,134,112?

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 321,134,112

321,134,112
Factor Arrows
2160,567,056
Factor Arrows
280,283,528
Factor Arrows
240,141,764
Factor Arrows
220,070,882
Factor Arrows
210,035,441
Factor Arrows
33,345,147
Factor Arrows
31,115,049
Factor Arrows
3371,683
Factor Arrows
1328,591

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, 13, 28591

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 13 x 28,591 = 321,134,112

This can also be written as 25 x 33 x 131 x 28,5911 = 321,134,112

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


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