Q: What are the prime factors of the number 12,268,160?

 A: 2, 5, 29, 661

Why are those the prime factors of the number 12,268,160?

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 12,268,160

12,268,160
Factor Arrows
26,134,080
Factor Arrows
23,067,040
Factor Arrows
21,533,520
Factor Arrows
2766,760
Factor Arrows
2383,380
Factor Arrows
2191,690
Factor Arrows
295,845
Factor Arrows
519,169
Factor Arrows
29661

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, 5, 29, 661

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 5 x 29 x 661 = 12,268,160

This can also be written as 27 x 51 x 291 x 6611 = 12,268,160

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


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