Q: What are the prime factors of the number 12,153,280?

 A: 2, 5, 163, 233

Why are those the prime factors of the number 12,153,280?

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 12,153,280

12,153,280
Factor Arrows
26,076,640
Factor Arrows
23,038,320
Factor Arrows
21,519,160
Factor Arrows
2759,580
Factor Arrows
2379,790
Factor Arrows
2189,895
Factor Arrows
537,979
Factor Arrows
163233

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, 163, 233

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 5 x 163 x 233 = 12,153,280

This can also be written as 26 x 51 x 1631 x 2331 = 12,153,280

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


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