Q: What are the prime factors of the number 21,341,034?

 A: 2, 3, 11, 13, 8291

Why are those the prime factors of the number 21,341,034?

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 21,341,034

21,341,034
Factor Arrows
210,670,517
Factor Arrows
33,556,839
Factor Arrows
31,185,613
Factor Arrows
11107,783
Factor Arrows
138,291

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, 11, 13, 8291

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 11 x 13 x 8,291 = 21,341,034

This can also be written as 21 x 32 x 111 x 131 x 8,2911 = 21,341,034

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


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