Q: What are the prime factors of the number 222,123,008?

 A: 2, 216917

Why are those the prime factors of the number 222,123,008?

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 222,123,008

222,123,008
Factor Arrows
2111,061,504
Factor Arrows
255,530,752
Factor Arrows
227,765,376
Factor Arrows
213,882,688
Factor Arrows
26,941,344
Factor Arrows
23,470,672
Factor Arrows
21,735,336
Factor Arrows
2867,668
Factor Arrows
2433,834
Factor Arrows
2216,917

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, 216917

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 2 x 2 x 216,917 = 222,123,008

This can also be written as 210 x 216,9171 = 222,123,008

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


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