Q: What are the prime factors of the number 263,551,320?

 A: 2, 3, 5, 81343

Why are those the prime factors of the number 263,551,320?

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 263,551,320

263,551,320
Factor Arrows
2131,775,660
Factor Arrows
265,887,830
Factor Arrows
232,943,915
Factor Arrows
310,981,305
Factor Arrows
33,660,435
Factor Arrows
31,220,145
Factor Arrows
3406,715
Factor Arrows
581,343

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, 81343

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 3 x 5 x 81,343 = 263,551,320

This can also be written as 23 x 34 x 51 x 81,3431 = 263,551,320

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


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