Q: What are the prime factors of the number 17,530,440?

 A: 2, 3, 5, 347, 421

Why are those the prime factors of the number 17,530,440?

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 17,530,440

17,530,440
Factor Arrows
28,765,220
Factor Arrows
24,382,610
Factor Arrows
22,191,305
Factor Arrows
3730,435
Factor Arrows
5146,087
Factor Arrows
347421

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, 347, 421

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 347 x 421 = 17,530,440

This can also be written as 23 x 31 x 51 x 3471 x 4211 = 17,530,440

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


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