Q: What are the prime factors of the number 18,462,514?

 A: 2, 7, 23, 8191

Why are those the prime factors of the number 18,462,514?

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 18,462,514

18,462,514
Factor Arrows
29,231,257
Factor Arrows
71,318,751
Factor Arrows
7188,393
Factor Arrows
238,191

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, 7, 23, 8191

We can check our work by multiplying all of the prime factors together: 2 x 7 x 7 x 23 x 8,191 = 18,462,514

This can also be written as 21 x 72 x 231 x 8,1911 = 18,462,514

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


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