Q: What are the prime factors of the number 168,208,755?

 A: 3, 5, 11, 13, 7129

Why are those the prime factors of the number 168,208,755?

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 168,208,755

168,208,755
Factor Arrows
356,069,585
Factor Arrows
511,213,917
Factor Arrows
111,019,447
Factor Arrows
1192,677
Factor Arrows
137,129

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, 5, 11, 13, 7129

We can check our work by multiplying all of the prime factors together: 3 x 5 x 11 x 11 x 13 x 7,129 = 168,208,755

This can also be written as 31 x 51 x 112 x 131 x 7,1291 = 168,208,755

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


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