Q: What are the prime factors of the number 18,101,400?

 A: 2, 3, 5, 30169

Why are those the prime factors of the number 18,101,400?

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 18,101,400

18,101,400
Factor Arrows
29,050,700
Factor Arrows
24,525,350
Factor Arrows
22,262,675
Factor Arrows
3754,225
Factor Arrows
5150,845
Factor Arrows
530,169

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, 30169

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 30,169 = 18,101,400

This can also be written as 23 x 31 x 52 x 30,1691 = 18,101,400

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


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