Q: What are the prime factors of the number 222,025,321?

 A: 7, 17, 47, 53, 107

Why are those the prime factors of the number 222,025,321?

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 222,025,321

222,025,321
Factor Arrows
731,717,903
Factor Arrows
74,531,129
Factor Arrows
17266,537
Factor Arrows
475,671
Factor Arrows
53107

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, 17, 47, 53, 107

We can check our work by multiplying all of the prime factors together: 7 x 7 x 17 x 47 x 53 x 107 = 222,025,321

This can also be written as 72 x 171 x 471 x 531 x 1071 = 222,025,321

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


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