Q: What are the prime factors of the number 243,050,240?

 A: 2, 5, 317, 599

Why are those the prime factors of the number 243,050,240?

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 243,050,240

243,050,240
Factor Arrows
2121,525,120
Factor Arrows
260,762,560
Factor Arrows
230,381,280
Factor Arrows
215,190,640
Factor Arrows
27,595,320
Factor Arrows
23,797,660
Factor Arrows
21,898,830
Factor Arrows
2949,415
Factor Arrows
5189,883
Factor Arrows
317599

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, 317, 599

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 317 x 599 = 243,050,240

This can also be written as 28 x 51 x 3171 x 5991 = 243,050,240

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


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