Q: What are the prime factors of the number 201,322,240?

 A: 2, 5, 7, 22469

Why are those the prime factors of the number 201,322,240?

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 201,322,240

201,322,240
Factor Arrows
2100,661,120
Factor Arrows
250,330,560
Factor Arrows
225,165,280
Factor Arrows
212,582,640
Factor Arrows
26,291,320
Factor Arrows
23,145,660
Factor Arrows
21,572,830
Factor Arrows
2786,415
Factor Arrows
5157,283
Factor Arrows
722,469

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, 7, 22469

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 5 x 7 x 22,469 = 201,322,240

This can also be written as 28 x 51 x 71 x 22,4691 = 201,322,240

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


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