Q: What are the prime factors of the number 131,113,198?

 A: 2, 31, 89, 23761

Why are those the prime factors of the number 131,113,198?

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 131,113,198

131,113,198
Factor Arrows
265,556,599
Factor Arrows
312,114,729
Factor Arrows
8923,761

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, 31, 89, 23761

We can check our work by multiplying all of the prime factors together: 2 x 31 x 89 x 23,761 = 131,113,198

This can also be written as 21 x 311 x 891 x 23,7611 = 131,113,198

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


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