Q: What are the prime factors of the number 811,544,174?

 A: 2, 7, 59, 20051

Why are those the prime factors of the number 811,544,174?

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 811,544,174

811,544,174
Factor Arrows
2405,772,087
Factor Arrows
757,967,441
Factor Arrows
78,281,063
Factor Arrows
71,183,009
Factor Arrows
5920,051

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, 7, 59, 20051

We can check our work by multiplying all of the prime factors together: 2 x 7 x 7 x 7 x 59 x 20,051 = 811,544,174

This can also be written as 21 x 73 x 591 x 20,0511 = 811,544,174

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


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