Q: What are the prime factors of the number 905,723?

 A: 7, 13, 37, 269

Why are those the prime factors of the number 905,723?

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 905,723

905,723
Factor Arrows
7129,389
Factor Arrows
139,953
Factor Arrows
37269

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:

7, 13, 37, 269

We can check our work by multiplying all of the prime factors together: 7 x 13 x 37 x 269 = 905,723

This can also be written as 71 x 131 x 371 x 2691 = 905,723

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


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