Q: What are the prime factors of the number 243,616,512?

 A: 2, 3, 317209

Why are those the prime factors of the number 243,616,512?

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 243,616,512

243,616,512
Factor Arrows
2121,808,256
Factor Arrows
260,904,128
Factor Arrows
230,452,064
Factor Arrows
215,226,032
Factor Arrows
27,613,016
Factor Arrows
23,806,508
Factor Arrows
21,903,254
Factor Arrows
2951,627
Factor Arrows
3317,209

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, 317209

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 3 x 317,209 = 243,616,512

This can also be written as 28 x 31 x 317,2091 = 243,616,512

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


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