Q: What are the prime factors of the number 787,785?

 A: 3, 5, 29, 1811

Why are those the prime factors of the number 787,785?

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 787,785

787,785
Factor Arrows
3262,595
Factor Arrows
552,519
Factor Arrows
291,811

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, 29, 1811

We can check our work by multiplying all of the prime factors together: 3 x 5 x 29 x 1,811 = 787,785

This can also be written as 31 x 51 x 291 x 1,8111 = 787,785

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


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