Q: What are the prime factors of the number 18,202,200?

 A: 2, 3, 5, 23, 1319

Why are those the prime factors of the number 18,202,200?

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 18,202,200

18,202,200
Factor Arrows
29,101,100
Factor Arrows
24,550,550
Factor Arrows
22,275,275
Factor Arrows
3758,425
Factor Arrows
5151,685
Factor Arrows
530,337
Factor Arrows
231,319

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, 23, 1319

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 5 x 23 x 1,319 = 18,202,200

This can also be written as 23 x 31 x 52 x 231 x 1,3191 = 18,202,200

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


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