Q: What are the prime factors of the number 51,135,656?

 A: 2, 11, 13, 44699

Why are those the prime factors of the number 51,135,656?

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 51,135,656

51,135,656
Factor Arrows
225,567,828
Factor Arrows
212,783,914
Factor Arrows
26,391,957
Factor Arrows
11581,087
Factor Arrows
1344,699

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, 13, 44699

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 11 x 13 x 44,699 = 51,135,656

This can also be written as 23 x 111 x 131 x 44,6991 = 51,135,656

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


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