Q: What are the prime factors of the number 222,211,122?

 A: 2, 3, 7, 37, 142993

Why are those the prime factors of the number 222,211,122?

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 222,211,122

222,211,122
Factor Arrows
2111,105,561
Factor Arrows
337,035,187
Factor Arrows
75,290,741
Factor Arrows
37142,993

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, 37, 142993

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 37 x 142,993 = 222,211,122

This can also be written as 21 x 31 x 71 x 371 x 142,9931 = 222,211,122

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


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