Q: What are the prime factors of the number 263,387,250?

 A: 2, 3, 5, 7, 2389

Why are those the prime factors of the number 263,387,250?

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 263,387,250

263,387,250
Factor Arrows
2131,693,625
Factor Arrows
343,897,875
Factor Arrows
314,632,625
Factor Arrows
52,926,525
Factor Arrows
5585,305
Factor Arrows
5117,061
Factor Arrows
716,723
Factor Arrows
72,389

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, 7, 2389

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 5 x 5 x 7 x 7 x 2,389 = 263,387,250

This can also be written as 21 x 32 x 53 x 72 x 2,3891 = 263,387,250

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


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