Q: What are the prime factors of the number 865,761?

 A: 3, 13, 79, 281

Why are those the prime factors of the number 865,761?

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 865,761

865,761
Factor Arrows
3288,587
Factor Arrows
1322,199
Factor Arrows
79281

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, 13, 79, 281

We can check our work by multiplying all of the prime factors together: 3 x 13 x 79 x 281 = 865,761

This can also be written as 31 x 131 x 791 x 2811 = 865,761

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


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