Q: What are the prime factors of the number 128,277?

 A: 3, 4751

Why are those the prime factors of the number 128,277?

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 128,277

128,277
Factor Arrows
342,759
Factor Arrows
314,253
Factor Arrows
34,751

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:

3, 4751

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 4,751 = 128,277

This can also be written as 33 x 4,7511 = 128,277

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


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