Q: What are the prime factors of the number 17,775,128?

 A: 2, 7, 131, 2423

Why are those the prime factors of the number 17,775,128?

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 17,775,128

17,775,128
Factor Arrows
28,887,564
Factor Arrows
24,443,782
Factor Arrows
22,221,891
Factor Arrows
7317,413
Factor Arrows
1312,423

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, 131, 2423

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 131 x 2,423 = 17,775,128

This can also be written as 23 x 71 x 1311 x 2,4231 = 17,775,128

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


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