Q: What are the prime factors of the number 1,100,100?

 A: 2, 3, 5, 19, 193

Why are those the prime factors of the number 1,100,100?

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 1,100,100

1,100,100
Factor Arrows
2550,050
Factor Arrows
2275,025
Factor Arrows
391,675
Factor Arrows
518,335
Factor Arrows
53,667
Factor Arrows
19193

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, 19, 193

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 19 x 193 = 1,100,100

This can also be written as 22 x 31 x 52 x 191 x 1931 = 1,100,100

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


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