Q: What are the prime factors of the number 11,389,200?

 A: 2, 3, 5, 9491

Why are those the prime factors of the number 11,389,200?

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 11,389,200

11,389,200
Factor Arrows
25,694,600
Factor Arrows
22,847,300
Factor Arrows
21,423,650
Factor Arrows
2711,825
Factor Arrows
3237,275
Factor Arrows
547,455
Factor Arrows
59,491

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, 5, 9491

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 5 x 9,491 = 11,389,200

This can also be written as 24 x 31 x 52 x 9,4911 = 11,389,200

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


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