Q: What are the prime factors of the number 51,131,568?

 A: 2, 3, 89, 11969

Why are those the prime factors of the number 51,131,568?

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 51,131,568

51,131,568
Factor Arrows
225,565,784
Factor Arrows
212,782,892
Factor Arrows
26,391,446
Factor Arrows
23,195,723
Factor Arrows
31,065,241
Factor Arrows
8911,969

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, 3, 89, 11969

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 89 x 11,969 = 51,131,568

This can also be written as 24 x 31 x 891 x 11,9691 = 51,131,568

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


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