Q: What are the prime factors of the number 19,110,144?

 A: 2, 3, 149, 167

Why are those the prime factors of the number 19,110,144?

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 19,110,144

19,110,144
Factor Arrows
29,555,072
Factor Arrows
24,777,536
Factor Arrows
22,388,768
Factor Arrows
21,194,384
Factor Arrows
2597,192
Factor Arrows
2298,596
Factor Arrows
2149,298
Factor Arrows
274,649
Factor Arrows
324,883
Factor Arrows
149167

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, 149, 167

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 149 x 167 = 19,110,144

This can also be written as 28 x 31 x 1491 x 1671 = 19,110,144

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


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