Q: What are the prime factors of the number 959,905?

 A: 5, 17, 23, 491

Why are those the prime factors of the number 959,905?

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 959,905

959,905
Factor Arrows
5191,981
Factor Arrows
1711,293
Factor Arrows
23491

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:

5, 17, 23, 491

We can check our work by multiplying all of the prime factors together: 5 x 17 x 23 x 491 = 959,905

This can also be written as 51 x 171 x 231 x 4911 = 959,905

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


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