Q: What are the prime factors of the number 342,080?

 A: 2, 5, 1069

Why are those the prime factors of the number 342,080?

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 342,080

342,080
Factor Arrows
2171,040
Factor Arrows
285,520
Factor Arrows
242,760
Factor Arrows
221,380
Factor Arrows
210,690
Factor Arrows
25,345
Factor Arrows
51,069

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, 1069

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 1,069 = 342,080

This can also be written as 26 x 51 x 1,0691 = 342,080

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


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