Q: What are the prime factors of the number 123,893,073?

 A: 3, 89, 137, 1129

Why are those the prime factors of the number 123,893,073?

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 123,893,073

123,893,073
Factor Arrows
341,297,691
Factor Arrows
313,765,897
Factor Arrows
89154,673
Factor Arrows
1371,129

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, 89, 137, 1129

We can check our work by multiplying all of the prime factors together: 3 x 3 x 89 x 137 x 1,129 = 123,893,073

This can also be written as 32 x 891 x 1371 x 1,1291 = 123,893,073

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


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