Q: What are the prime factors of the number 56,320,056?

 A: 2, 3, 13, 31, 647

Why are those the prime factors of the number 56,320,056?

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 56,320,056

56,320,056
Factor Arrows
228,160,028
Factor Arrows
214,080,014
Factor Arrows
27,040,007
Factor Arrows
32,346,669
Factor Arrows
3782,223
Factor Arrows
3260,741
Factor Arrows
1320,057
Factor Arrows
31647

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, 13, 31, 647

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 13 x 31 x 647 = 56,320,056

This can also be written as 23 x 33 x 131 x 311 x 6471 = 56,320,056

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


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