Q: What are the prime factors of the number 12,313,512?

 A: 2, 3, 109, 523

Why are those the prime factors of the number 12,313,512?

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 12,313,512

12,313,512
Factor Arrows
26,156,756
Factor Arrows
23,078,378
Factor Arrows
21,539,189
Factor Arrows
3513,063
Factor Arrows
3171,021
Factor Arrows
357,007
Factor Arrows
109523

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, 109, 523

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 109 x 523 = 12,313,512

This can also be written as 23 x 33 x 1091 x 5231 = 12,313,512

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


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