Q: What are the prime factors of the number 665,135,152?

 A: 2, 11, 347, 10891

Why are those the prime factors of the number 665,135,152?

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 665,135,152

665,135,152
Factor Arrows
2332,567,576
Factor Arrows
2166,283,788
Factor Arrows
283,141,894
Factor Arrows
241,570,947
Factor Arrows
113,779,177
Factor Arrows
34710,891

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, 347, 10891

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 347 x 10,891 = 665,135,152

This can also be written as 24 x 111 x 3471 x 10,8911 = 665,135,152

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


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