Q: What are the prime factors of the number 324,728,352?

 A: 2, 3, 13, 23, 419

Why are those the prime factors of the number 324,728,352?

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 324,728,352

324,728,352
Factor Arrows
2162,364,176
Factor Arrows
281,182,088
Factor Arrows
240,591,044
Factor Arrows
220,295,522
Factor Arrows
210,147,761
Factor Arrows
33,382,587
Factor Arrows
31,127,529
Factor Arrows
3375,843
Factor Arrows
3125,281
Factor Arrows
139,637
Factor Arrows
23419

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, 23, 419

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 3 x 13 x 23 x 419 = 324,728,352

This can also be written as 25 x 34 x 131 x 231 x 4191 = 324,728,352

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


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