Q: What are the prime factors of the number 123,413,829?

 A: 3, 7, 11, 17, 2857

Why are those the prime factors of the number 123,413,829?

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 123,413,829

123,413,829
Factor Arrows
341,137,943
Factor Arrows
75,876,849
Factor Arrows
11534,259
Factor Arrows
1148,569
Factor Arrows
172,857

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:

3, 7, 11, 17, 2857

We can check our work by multiplying all of the prime factors together: 3 x 7 x 11 x 11 x 17 x 2,857 = 123,413,829

This can also be written as 31 x 71 x 112 x 171 x 2,8571 = 123,413,829

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


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