Q: What are the prime factors of the number 775,808?

 A: 2, 11, 19, 29

Why are those the prime factors of the number 775,808?

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 775,808

775,808
Factor Arrows
2387,904
Factor Arrows
2193,952
Factor Arrows
296,976
Factor Arrows
248,488
Factor Arrows
224,244
Factor Arrows
212,122
Factor Arrows
26,061
Factor Arrows
11551
Factor Arrows
1929

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, 11, 19, 29

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 11 x 19 x 29 = 775,808

This can also be written as 27 x 111 x 191 x 291 = 775,808

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


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