Q: What are the prime factors of the number 223,121,024?

 A: 2, 7, 227, 1097

Why are those the prime factors of the number 223,121,024?

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 223,121,024

223,121,024
Factor Arrows
2111,560,512
Factor Arrows
255,780,256
Factor Arrows
227,890,128
Factor Arrows
213,945,064
Factor Arrows
26,972,532
Factor Arrows
23,486,266
Factor Arrows
21,743,133
Factor Arrows
7249,019
Factor Arrows
2271,097

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, 7, 227, 1097

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 7 x 227 x 1,097 = 223,121,024

This can also be written as 27 x 71 x 2271 x 1,0971 = 223,121,024

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


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