Q: What are the prime factors of the number 905,275?

 A: 5, 7, 739

Why are those the prime factors of the number 905,275?

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 905,275

905,275
Factor Arrows
5181,055
Factor Arrows
536,211
Factor Arrows
75,173
Factor Arrows
7739

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, 7, 739

We can check our work by multiplying all of the prime factors together: 5 x 5 x 7 x 7 x 739 = 905,275

This can also be written as 52 x 72 x 7391 = 905,275

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


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