Q: What are the prime factors of the number 223,101,312?

 A: 2, 3, 7, 71, 167

Why are those the prime factors of the number 223,101,312?

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 223,101,312

223,101,312
Factor Arrows
2111,550,656
Factor Arrows
255,775,328
Factor Arrows
227,887,664
Factor Arrows
213,943,832
Factor Arrows
26,971,916
Factor Arrows
23,485,958
Factor Arrows
21,742,979
Factor Arrows
3580,993
Factor Arrows
782,999
Factor Arrows
711,857
Factor Arrows
71167

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, 3, 7, 71, 167

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 3 x 7 x 7 x 71 x 167 = 223,101,312

This can also be written as 27 x 31 x 72 x 711 x 1671 = 223,101,312

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


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