Q: What are the prime factors of the number 181,930?

 A: 2, 5, 7, 23, 113

Why are those the prime factors of the number 181,930?

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 181,930

181,930
Factor Arrows
290,965
Factor Arrows
518,193
Factor Arrows
72,599
Factor Arrows
23113

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, 7, 23, 113

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 23 x 113 = 181,930

This can also be written as 21 x 51 x 71 x 231 x 1131 = 181,930

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


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