Q: What are the prime factors of the number 324,784,640?

 A: 2, 5, 293, 433

Why are those the prime factors of the number 324,784,640?

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 324,784,640

324,784,640
Factor Arrows
2162,392,320
Factor Arrows
281,196,160
Factor Arrows
240,598,080
Factor Arrows
220,299,040
Factor Arrows
210,149,520
Factor Arrows
25,074,760
Factor Arrows
22,537,380
Factor Arrows
21,268,690
Factor Arrows
2634,345
Factor Arrows
5126,869
Factor Arrows
293433

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, 5, 293, 433

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 293 x 433 = 324,784,640

This can also be written as 29 x 51 x 2931 x 4331 = 324,784,640

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


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