Q: What are the prime factors of the number 11,145,750?

 A: 2, 3, 5, 7, 11, 193

Why are those the prime factors of the number 11,145,750?

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 11,145,750

11,145,750
Factor Arrows
25,572,875
Factor Arrows
31,857,625
Factor Arrows
5371,525
Factor Arrows
574,305
Factor Arrows
514,861
Factor Arrows
72,123
Factor Arrows
11193

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, 11, 193

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 5 x 5 x 7 x 11 x 193 = 11,145,750

This can also be written as 21 x 31 x 53 x 71 x 111 x 1931 = 11,145,750

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


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