Q: What are the prime factors of the number 904,816?

 A: 2, 11, 53, 97

Why are those the prime factors of the number 904,816?

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 904,816

904,816
Factor Arrows
2452,408
Factor Arrows
2226,204
Factor Arrows
2113,102
Factor Arrows
256,551
Factor Arrows
115,141
Factor Arrows
5397

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:

2, 11, 53, 97

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 53 x 97 = 904,816

This can also be written as 24 x 111 x 531 x 971 = 904,816

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


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