Q: What are the prime factors of the number 105,135,272?

 A: 2, 11, 373, 3203

Why are those the prime factors of the number 105,135,272?

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 105,135,272

105,135,272
Factor Arrows
252,567,636
Factor Arrows
226,283,818
Factor Arrows
213,141,909
Factor Arrows
111,194,719
Factor Arrows
3733,203

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, 11, 373, 3203

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 11 x 373 x 3,203 = 105,135,272

This can also be written as 23 x 111 x 3731 x 3,2031 = 105,135,272

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


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