Q: What are the prime factors of the number 18,358,850?

 A: 2, 5, 43, 8539

Why are those the prime factors of the number 18,358,850?

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 18,358,850

18,358,850
Factor Arrows
29,179,425
Factor Arrows
51,835,885
Factor Arrows
5367,177
Factor Arrows
438,539

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, 43, 8539

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 43 x 8,539 = 18,358,850

This can also be written as 21 x 52 x 431 x 8,5391 = 18,358,850

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


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