Q: What are the prime factors of the number 111,365,560?

 A: 2, 5, 37, 47, 1601

Why are those the prime factors of the number 111,365,560?

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 111,365,560

111,365,560
Factor Arrows
255,682,780
Factor Arrows
227,841,390
Factor Arrows
213,920,695
Factor Arrows
52,784,139
Factor Arrows
3775,247
Factor Arrows
471,601

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, 37, 47, 1601

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 37 x 47 x 1,601 = 111,365,560

This can also be written as 23 x 51 x 371 x 471 x 1,6011 = 111,365,560

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


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