Q: What are the prime factors of the number 177,749?

 A: 11, 13, 113

Why are those the prime factors of the number 177,749?

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 177,749

177,749
Factor Arrows
1116,159
Factor Arrows
111,469
Factor Arrows
13113

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:

11, 13, 113

We can check our work by multiplying all of the prime factors together: 11 x 11 x 13 x 113 = 177,749

This can also be written as 112 x 131 x 1131 = 177,749

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


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