Q: What are the prime factors of the number 331,130,131?

 A: 17, 37, 173, 179

Why are those the prime factors of the number 331,130,131?

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 331,130,131

331,130,131
Factor Arrows
1719,478,243
Factor Arrows
171,145,779
Factor Arrows
3730,967
Factor Arrows
173179

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:

17, 37, 173, 179

We can check our work by multiplying all of the prime factors together: 17 x 17 x 37 x 173 x 179 = 331,130,131

This can also be written as 172 x 371 x 1731 x 1791 = 331,130,131

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


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