Q: What are the prime factors of the number 181,140?

 A: 2, 3, 5, 3019

Why are those the prime factors of the number 181,140?

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 181,140

181,140
Factor Arrows
290,570
Factor Arrows
245,285
Factor Arrows
315,095
Factor Arrows
53,019

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, 5, 3019

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 3,019 = 181,140

This can also be written as 22 x 31 x 51 x 3,0191 = 181,140

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


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