Q: What are the prime factors of the number 213,115,100?

 A: 2, 5, 11, 193741

Why are those the prime factors of the number 213,115,100?

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 213,115,100

213,115,100
Factor Arrows
2106,557,550
Factor Arrows
253,278,775
Factor Arrows
510,655,755
Factor Arrows
52,131,151
Factor Arrows
11193,741

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, 193741

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 11 x 193,741 = 213,115,100

This can also be written as 22 x 52 x 111 x 193,7411 = 213,115,100

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


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