Q: What are the prime factors of the number 11,326,420?

 A: 2, 5, 7, 17, 4759

Why are those the prime factors of the number 11,326,420?

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 11,326,420

11,326,420
Factor Arrows
25,663,210
Factor Arrows
22,831,605
Factor Arrows
5566,321
Factor Arrows
780,903
Factor Arrows
174,759

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, 5, 7, 17, 4759

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 17 x 4,759 = 11,326,420

This can also be written as 22 x 51 x 71 x 171 x 4,7591 = 11,326,420

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


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