Q: What are the prime factors of the number 55,520?

 A: 2, 5, 347

Why are those the prime factors of the number 55,520?

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 55,520

55,520
Factor Arrows
227,760
Factor Arrows
213,880
Factor Arrows
26,940
Factor Arrows
23,470
Factor Arrows
21,735
Factor Arrows
5347

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, 347

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 347 = 55,520

This can also be written as 25 x 51 x 3471 = 55,520

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


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