Q: What are the prime factors of the number 11,211,318?

 A: 2, 3, 191, 1087

Why are those the prime factors of the number 11,211,318?

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 11,211,318

11,211,318
Factor Arrows
25,605,659
Factor Arrows
31,868,553
Factor Arrows
3622,851
Factor Arrows
3207,617
Factor Arrows
1911,087

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, 191, 1087

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 191 x 1,087 = 11,211,318

This can also be written as 21 x 33 x 1911 x 1,0871 = 11,211,318

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


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