Q: What are the prime factors of the number 11,638?

 A: 2, 11, 23

Why are those the prime factors of the number 11,638?

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 11,638

11,638
Factor Arrows
25,819
Factor Arrows
11529
Factor Arrows
2323

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, 11, 23

We can check our work by multiplying all of the prime factors together: 2 x 11 x 23 x 23 = 11,638

This can also be written as 21 x 111 x 232 = 11,638

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


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