Q: What are the prime factors of the number 2,174,536?

 A: 2, 7, 13, 29, 103

Why are those the prime factors of the number 2,174,536?

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 2,174,536

2,174,536
Factor Arrows
21,087,268
Factor Arrows
2543,634
Factor Arrows
2271,817
Factor Arrows
738,831
Factor Arrows
132,987
Factor Arrows
29103

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, 7, 13, 29, 103

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 13 x 29 x 103 = 2,174,536

This can also be written as 23 x 71 x 131 x 291 x 1031 = 2,174,536

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


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