Q: What are the prime factors of the number 776,475?

 A: 3, 5, 7, 17, 29

Why are those the prime factors of the number 776,475?

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 776,475

776,475
Factor Arrows
3258,825
Factor Arrows
386,275
Factor Arrows
517,255
Factor Arrows
53,451
Factor Arrows
7493
Factor Arrows
1729

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:

3, 5, 7, 17, 29

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 5 x 7 x 17 x 29 = 776,475

This can also be written as 32 x 52 x 71 x 171 x 291 = 776,475

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


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