Q: What are the prime factors of the number 222,251,309?

 A: 7, 647963

Why are those the prime factors of the number 222,251,309?

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 222,251,309

222,251,309
Factor Arrows
731,750,187
Factor Arrows
74,535,741
Factor Arrows
7647,963

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:

7, 647963

We can check our work by multiplying all of the prime factors together: 7 x 7 x 7 x 647,963 = 222,251,309

This can also be written as 73 x 647,9631 = 222,251,309

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


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