Q: What are the prime factors of the number 162,880?

 A: 2, 5, 509

Why are those the prime factors of the number 162,880?

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 162,880

162,880
Factor Arrows
281,440
Factor Arrows
240,720
Factor Arrows
220,360
Factor Arrows
210,180
Factor Arrows
25,090
Factor Arrows
22,545
Factor Arrows
5509

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, 509

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 5 x 509 = 162,880

This can also be written as 26 x 51 x 5091 = 162,880

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


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