Q: What are the prime factors of the number 11,173,400?

 A: 2, 5, 7, 23, 347

Why are those the prime factors of the number 11,173,400?

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 11,173,400

11,173,400
Factor Arrows
25,586,700
Factor Arrows
22,793,350
Factor Arrows
21,396,675
Factor Arrows
5279,335
Factor Arrows
555,867
Factor Arrows
77,981
Factor Arrows
23347

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, 23, 347

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 7 x 23 x 347 = 11,173,400

This can also be written as 23 x 52 x 71 x 231 x 3471 = 11,173,400

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


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