Q: What are the prime factors of the number 680,480?

 A: 2, 5, 4253

Why are those the prime factors of the number 680,480?

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 680,480

680,480
Factor Arrows
2340,240
Factor Arrows
2170,120
Factor Arrows
285,060
Factor Arrows
242,530
Factor Arrows
221,265
Factor Arrows
54,253

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, 4253

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 4,253 = 680,480

This can also be written as 25 x 51 x 4,2531 = 680,480

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


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