Q: What are the prime factors of the number 111,001,000?

 A: 2, 5, 11, 10091

Why are those the prime factors of the number 111,001,000?

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 111,001,000

111,001,000
Factor Arrows
255,500,500
Factor Arrows
227,750,250
Factor Arrows
213,875,125
Factor Arrows
52,775,025
Factor Arrows
5555,005
Factor Arrows
5111,001
Factor Arrows
1110,091

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, 5, 11, 10091

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 5 x 11 x 10,091 = 111,001,000

This can also be written as 23 x 53 x 111 x 10,0911 = 111,001,000

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


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