Q: What are the prime factors of the number 18,500,373?

 A: 3, 685199

Why are those the prime factors of the number 18,500,373?

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 18,500,373

18,500,373
Factor Arrows
36,166,791
Factor Arrows
32,055,597
Factor Arrows
3685,199

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:

3, 685199

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 685,199 = 18,500,373

This can also be written as 33 x 685,1991 = 18,500,373

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


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