Q: What are the prime factors of the number 222,657,568?

 A: 2, 7, 17, 8353

Why are those the prime factors of the number 222,657,568?

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 222,657,568

222,657,568
Factor Arrows
2111,328,784
Factor Arrows
255,664,392
Factor Arrows
227,832,196
Factor Arrows
213,916,098
Factor Arrows
26,958,049
Factor Arrows
7994,007
Factor Arrows
7142,001
Factor Arrows
178,353

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, 17, 8353

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 7 x 17 x 8,353 = 222,657,568

This can also be written as 25 x 72 x 171 x 8,3531 = 222,657,568

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


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