Q: What are the prime factors of the number 18,376,930?

 A: 2, 5, 11, 13, 71, 181

Why are those the prime factors of the number 18,376,930?

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 18,376,930

18,376,930
Factor Arrows
29,188,465
Factor Arrows
51,837,693
Factor Arrows
11167,063
Factor Arrows
1312,851
Factor Arrows
71181

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, 11, 13, 71, 181

We can check our work by multiplying all of the prime factors together: 2 x 5 x 11 x 13 x 71 x 181 = 18,376,930

This can also be written as 21 x 51 x 111 x 131 x 711 x 1811 = 18,376,930

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


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