Q: What are the prime factors of the number 131,744?

 A: 2, 23, 179

Why are those the prime factors of the number 131,744?

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 131,744

131,744
Factor Arrows
265,872
Factor Arrows
232,936
Factor Arrows
216,468
Factor Arrows
28,234
Factor Arrows
24,117
Factor Arrows
23179

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, 23, 179

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 23 x 179 = 131,744

This can also be written as 25 x 231 x 1791 = 131,744

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


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