Q: What are the prime factors of the number 18,144,800?

 A: 2, 5, 37, 613

Why are those the prime factors of the number 18,144,800?

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 18,144,800

18,144,800
Factor Arrows
29,072,400
Factor Arrows
24,536,200
Factor Arrows
22,268,100
Factor Arrows
21,134,050
Factor Arrows
2567,025
Factor Arrows
5113,405
Factor Arrows
522,681
Factor Arrows
37613

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, 37, 613

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 5 x 37 x 613 = 18,144,800

This can also be written as 25 x 52 x 371 x 6131 = 18,144,800

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


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