Q: What are the prime factors of the number 2,489,123?

 A: 7, 13, 17, 1609

Why are those the prime factors of the number 2,489,123?

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 2,489,123

2,489,123
Factor Arrows
7355,589
Factor Arrows
1327,353
Factor Arrows
171,609

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:

7, 13, 17, 1609

We can check our work by multiplying all of the prime factors together: 7 x 13 x 17 x 1,609 = 2,489,123

This can also be written as 71 x 131 x 171 x 1,6091 = 2,489,123

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


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