Q: What are the prime factors of the number 12,261,312?

 A: 2, 3, 7, 3041

Why are those the prime factors of the number 12,261,312?

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 12,261,312

12,261,312
Factor Arrows
26,130,656
Factor Arrows
23,065,328
Factor Arrows
21,532,664
Factor Arrows
2766,332
Factor Arrows
2383,166
Factor Arrows
2191,583
Factor Arrows
363,861
Factor Arrows
321,287
Factor Arrows
73,041

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, 7, 3041

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 3 x 7 x 3,041 = 12,261,312

This can also be written as 26 x 32 x 71 x 3,0411 = 12,261,312

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


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