Q: What are the prime factors of the number 775,840?

 A: 2, 5, 13, 373

Why are those the prime factors of the number 775,840?

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 775,840

775,840
Factor Arrows
2387,920
Factor Arrows
2193,960
Factor Arrows
296,980
Factor Arrows
248,490
Factor Arrows
224,245
Factor Arrows
54,849
Factor Arrows
13373

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, 13, 373

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 13 x 373 = 775,840

This can also be written as 25 x 51 x 131 x 3731 = 775,840

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 775,840:


Ask a Question