Q: What are the prime factors of the number 11,556,400?

 A: 2, 5, 167, 173

Why are those the prime factors of the number 11,556,400?

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 11,556,400

11,556,400
Factor Arrows
25,778,200
Factor Arrows
22,889,100
Factor Arrows
21,444,550
Factor Arrows
2722,275
Factor Arrows
5144,455
Factor Arrows
528,891
Factor Arrows
167173

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, 167, 173

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 5 x 167 x 173 = 11,556,400

This can also be written as 24 x 52 x 1671 x 1731 = 11,556,400

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


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