Q: What are the prime factors of the number 122,910?

 A: 2, 3, 5, 17, 241

Why are those the prime factors of the number 122,910?

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 122,910

122,910
Factor Arrows
261,455
Factor Arrows
320,485
Factor Arrows
54,097
Factor Arrows
17241

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, 17, 241

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 17 x 241 = 122,910

This can also be written as 21 x 31 x 51 x 171 x 2411 = 122,910

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


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