Q: What are the prime factors of the number 139,660?

 A: 2, 5, 6983

Why are those the prime factors of the number 139,660?

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 139,660

139,660
Factor Arrows
269,830
Factor Arrows
234,915
Factor Arrows
56,983

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, 5, 6983

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 6,983 = 139,660

This can also be written as 22 x 51 x 6,9831 = 139,660

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


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