Q: What are the prime factors of the number 18,753,380?

 A: 2, 5, 17, 19, 2903

Why are those the prime factors of the number 18,753,380?

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 18,753,380

18,753,380
Factor Arrows
29,376,690
Factor Arrows
24,688,345
Factor Arrows
5937,669
Factor Arrows
1755,157
Factor Arrows
192,903

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, 17, 19, 2903

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 17 x 19 x 2,903 = 18,753,380

This can also be written as 22 x 51 x 171 x 191 x 2,9031 = 18,753,380

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


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