Q: What are the prime factors of the number 213,112,128?

 A: 2, 3, 43, 83, 311

Why are those the prime factors of the number 213,112,128?

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 213,112,128

213,112,128
Factor Arrows
2106,556,064
Factor Arrows
253,278,032
Factor Arrows
226,639,016
Factor Arrows
213,319,508
Factor Arrows
26,659,754
Factor Arrows
23,329,877
Factor Arrows
31,109,959
Factor Arrows
4325,813
Factor Arrows
83311

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, 43, 83, 311

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 43 x 83 x 311 = 213,112,128

This can also be written as 26 x 31 x 431 x 831 x 3111 = 213,112,128

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


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