Q: What are the prime factors of the number 131,323,005?

 A: 3, 5, 11, 191, 463

Why are those the prime factors of the number 131,323,005?

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 131,323,005

131,323,005
Factor Arrows
343,774,335
Factor Arrows
314,591,445
Factor Arrows
34,863,815
Factor Arrows
5972,763
Factor Arrows
1188,433
Factor Arrows
191463

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:

3, 5, 11, 191, 463

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 11 x 191 x 463 = 131,323,005

This can also be written as 33 x 51 x 111 x 1911 x 4631 = 131,323,005

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


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