Q: What are the prime factors of the number 27,800,556?

 A: 2, 3, 7, 139, 2381

Why are those the prime factors of the number 27,800,556?

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 27,800,556

27,800,556
Factor Arrows
213,900,278
Factor Arrows
26,950,139
Factor Arrows
32,316,713
Factor Arrows
7330,959
Factor Arrows
1392,381

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, 7, 139, 2381

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 139 x 2,381 = 27,800,556

This can also be written as 22 x 31 x 71 x 1391 x 2,3811 = 27,800,556

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


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