Q: What are the prime factors of the number 18,673,792?

 A: 2, 23, 6343

Why are those the prime factors of the number 18,673,792?

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 18,673,792

18,673,792
Factor Arrows
29,336,896
Factor Arrows
24,668,448
Factor Arrows
22,334,224
Factor Arrows
21,167,112
Factor Arrows
2583,556
Factor Arrows
2291,778
Factor Arrows
2145,889
Factor Arrows
236,343

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, 23, 6343

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 23 x 6,343 = 18,673,792

This can also be written as 27 x 231 x 6,3431 = 18,673,792

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


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