Q: What are the prime factors of the number 118,181,556?

 A: 2, 3, 521, 6301

Why are those the prime factors of the number 118,181,556?

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 118,181,556

118,181,556
Factor Arrows
259,090,778
Factor Arrows
229,545,389
Factor Arrows
39,848,463
Factor Arrows
33,282,821
Factor Arrows
5216,301

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, 521, 6301

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 521 x 6,301 = 118,181,556

This can also be written as 22 x 32 x 5211 x 6,3011 = 118,181,556

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


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