Q: What are the prime factors of the number 765,905?

 A: 5, 7, 79, 277

Why are those the prime factors of the number 765,905?

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 765,905

765,905
Factor Arrows
5153,181
Factor Arrows
721,883
Factor Arrows
79277

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:

5, 7, 79, 277

We can check our work by multiplying all of the prime factors together: 5 x 7 x 79 x 277 = 765,905

This can also be written as 51 x 71 x 791 x 2771 = 765,905

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


More Examples

Here are some more numbers to try:

Try the factor calculator

Explore more about the number 765,905:


Ask a Question