Q: What are the prime factors of the number 18,612,600?

 A: 2, 3, 5, 67, 463

Why are those the prime factors of the number 18,612,600?

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 18,612,600

18,612,600
Factor Arrows
29,306,300
Factor Arrows
24,653,150
Factor Arrows
22,326,575
Factor Arrows
3775,525
Factor Arrows
5155,105
Factor Arrows
531,021
Factor Arrows
67463

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, 67, 463

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 67 x 463 = 18,612,600

This can also be written as 23 x 31 x 52 x 671 x 4631 = 18,612,600

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


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