Q: What are the prime factors of the number 321,130,224?

 A: 2, 3, 29, 25633

Why are those the prime factors of the number 321,130,224?

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 321,130,224

321,130,224
Factor Arrows
2160,565,112
Factor Arrows
280,282,556
Factor Arrows
240,141,278
Factor Arrows
220,070,639
Factor Arrows
36,690,213
Factor Arrows
32,230,071
Factor Arrows
3743,357
Factor Arrows
2925,633

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, 29, 25633

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 29 x 25,633 = 321,130,224

This can also be written as 24 x 33 x 291 x 25,6331 = 321,130,224

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


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