Q: What are the prime factors of the number 136,207,128?

 A: 2, 3, 17, 47, 7103

Why are those the prime factors of the number 136,207,128?

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 136,207,128

136,207,128
Factor Arrows
268,103,564
Factor Arrows
234,051,782
Factor Arrows
217,025,891
Factor Arrows
35,675,297
Factor Arrows
17333,841
Factor Arrows
477,103

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, 3, 17, 47, 7103

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 17 x 47 x 7,103 = 136,207,128

This can also be written as 23 x 31 x 171 x 471 x 7,1031 = 136,207,128

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


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