Q: What are the prime factors of the number 139,880?

 A: 2, 5, 13, 269

Why are those the prime factors of the number 139,880?

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 139,880

139,880
Factor Arrows
269,940
Factor Arrows
234,970
Factor Arrows
217,485
Factor Arrows
53,497
Factor Arrows
13269

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, 13, 269

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 13 x 269 = 139,880

This can also be written as 23 x 51 x 131 x 2691 = 139,880

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


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