Q: What are the prime factors of the number 211,351,518?

 A: 2, 3, 7, 186377

Why are those the prime factors of the number 211,351,518?

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 211,351,518

211,351,518
Factor Arrows
2105,675,759
Factor Arrows
335,225,253
Factor Arrows
311,741,751
Factor Arrows
33,913,917
Factor Arrows
31,304,639
Factor Arrows
7186,377

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, 3, 7, 186377

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 7 x 186,377 = 211,351,518

This can also be written as 21 x 34 x 71 x 186,3771 = 211,351,518

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


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