Q: What are the prime factors of the number 17,145,726?

 A: 2, 3, 13, 37, 457

Why are those the prime factors of the number 17,145,726?

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 17,145,726

17,145,726
Factor Arrows
28,572,863
Factor Arrows
32,857,621
Factor Arrows
13219,817
Factor Arrows
1316,909
Factor Arrows
37457

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, 13, 37, 457

We can check our work by multiplying all of the prime factors together: 2 x 3 x 13 x 13 x 37 x 457 = 17,145,726

This can also be written as 21 x 31 x 132 x 371 x 4571 = 17,145,726

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


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