Q: What are the prime factors of the number 555,560?

 A: 2, 5, 17, 19, 43

Why are those the prime factors of the number 555,560?

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 555,560

555,560
Factor Arrows
2277,780
Factor Arrows
2138,890
Factor Arrows
269,445
Factor Arrows
513,889
Factor Arrows
17817
Factor Arrows
1943

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, 17, 19, 43

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 17 x 19 x 43 = 555,560

This can also be written as 23 x 51 x 171 x 191 x 431 = 555,560

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


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