Q: What are the prime factors of the number 55,556,550?

 A: 2, 3, 5, 7, 5879

Why are those the prime factors of the number 55,556,550?

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 55,556,550

55,556,550
Factor Arrows
227,778,275
Factor Arrows
39,259,425
Factor Arrows
33,086,475
Factor Arrows
31,028,825
Factor Arrows
5205,765
Factor Arrows
541,153
Factor Arrows
75,879

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, 3, 5, 7, 5879

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 5 x 5 x 7 x 5,879 = 55,556,550

This can also be written as 21 x 33 x 52 x 71 x 5,8791 = 55,556,550

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


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