Q: What are the prime factors of the number 12,376,320?

 A: 2, 3, 5, 11, 293

Why are those the prime factors of the number 12,376,320?

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 12,376,320

12,376,320
Factor Arrows
26,188,160
Factor Arrows
23,094,080
Factor Arrows
21,547,040
Factor Arrows
2773,520
Factor Arrows
2386,760
Factor Arrows
2193,380
Factor Arrows
296,690
Factor Arrows
248,345
Factor Arrows
316,115
Factor Arrows
53,223
Factor Arrows
11293

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, 5, 11, 293

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 5 x 11 x 293 = 12,376,320

This can also be written as 28 x 31 x 51 x 111 x 2931 = 12,376,320

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


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