Q: What are the prime factors of the number 2,591,106?

 A: 2, 3, 7, 17, 19, 191

Why are those the prime factors of the number 2,591,106?

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 2,591,106

2,591,106
Factor Arrows
21,295,553
Factor Arrows
3431,851
Factor Arrows
761,693
Factor Arrows
173,629
Factor Arrows
19191

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, 7, 17, 19, 191

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 17 x 19 x 191 = 2,591,106

This can also be written as 21 x 31 x 71 x 171 x 191 x 1911 = 2,591,106

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


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