Q: What are the prime factors of the number 123,031,210?

 A: 2, 5, 17, 677, 1069

Why are those the prime factors of the number 123,031,210?

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 123,031,210

123,031,210
Factor Arrows
261,515,605
Factor Arrows
512,303,121
Factor Arrows
17723,713
Factor Arrows
6771,069

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, 5, 17, 677, 1069

We can check our work by multiplying all of the prime factors together: 2 x 5 x 17 x 677 x 1,069 = 123,031,210

This can also be written as 21 x 51 x 171 x 6771 x 1,0691 = 123,031,210

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


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