Q: What are the prime factors of the number 131,005,644?

 A: 2, 3, 7, 11, 29, 4889

Why are those the prime factors of the number 131,005,644?

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 131,005,644

131,005,644
Factor Arrows
265,502,822
Factor Arrows
232,751,411
Factor Arrows
310,917,137
Factor Arrows
71,559,591
Factor Arrows
11141,781
Factor Arrows
294,889

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, 7, 11, 29, 4889

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 11 x 29 x 4,889 = 131,005,644

This can also be written as 22 x 31 x 71 x 111 x 291 x 4,8891 = 131,005,644

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


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