Q: What are the prime factors of the number 243,212,032?

 A: 2, 7, 135721

Why are those the prime factors of the number 243,212,032?

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 243,212,032

243,212,032
Factor Arrows
2121,606,016
Factor Arrows
260,803,008
Factor Arrows
230,401,504
Factor Arrows
215,200,752
Factor Arrows
27,600,376
Factor Arrows
23,800,188
Factor Arrows
21,900,094
Factor Arrows
2950,047
Factor Arrows
7135,721

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, 135721

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 2 x 2 x 7 x 135,721 = 243,212,032

This can also be written as 28 x 71 x 135,7211 = 243,212,032

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


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