Q: What are the prime factors of the number 263,780?

 A: 2, 5, 11, 109

Why are those the prime factors of the number 263,780?

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 263,780

263,780
Factor Arrows
2131,890
Factor Arrows
265,945
Factor Arrows
513,189
Factor Arrows
111,199
Factor Arrows
11109

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, 11, 109

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 11 x 11 x 109 = 263,780

This can also be written as 22 x 51 x 112 x 1091 = 263,780

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


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