Q: What are the prime factors of the number 916,455?

 A: 3, 5, 107, 571

Why are those the prime factors of the number 916,455?

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 916,455

916,455
Factor Arrows
3305,485
Factor Arrows
561,097
Factor Arrows
107571

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, 107, 571

We can check our work by multiplying all of the prime factors together: 3 x 5 x 107 x 571 = 916,455

This can also be written as 31 x 51 x 1071 x 5711 = 916,455

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


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