Q: What are the prime factors of the number 71,831,409?

 A: 3, 13, 17, 108343

Why are those the prime factors of the number 71,831,409?

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 71,831,409

71,831,409
Factor Arrows
323,943,803
Factor Arrows
131,841,831
Factor Arrows
17108,343

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, 13, 17, 108343

We can check our work by multiplying all of the prime factors together: 3 x 13 x 17 x 108,343 = 71,831,409

This can also be written as 31 x 131 x 171 x 108,3431 = 71,831,409

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


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