Q: What are the prime factors of the number 267,161,312?

 A: 2, 11, 37, 73, 281

Why are those the prime factors of the number 267,161,312?

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 267,161,312

267,161,312
Factor Arrows
2133,580,656
Factor Arrows
266,790,328
Factor Arrows
233,395,164
Factor Arrows
216,697,582
Factor Arrows
28,348,791
Factor Arrows
11758,981
Factor Arrows
3720,513
Factor Arrows
73281

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, 11, 37, 73, 281

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 11 x 37 x 73 x 281 = 267,161,312

This can also be written as 25 x 111 x 371 x 731 x 2811 = 267,161,312

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


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