Q: What are the prime factors of the number 19,241,664?

 A: 2, 3, 13, 593

Why are those the prime factors of the number 19,241,664?

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 19,241,664

19,241,664
Factor Arrows
29,620,832
Factor Arrows
24,810,416
Factor Arrows
22,405,208
Factor Arrows
21,202,604
Factor Arrows
2601,302
Factor Arrows
2300,651
Factor Arrows
3100,217
Factor Arrows
137,709
Factor Arrows
13593

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, 593

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 3 x 13 x 13 x 593 = 19,241,664

This can also be written as 26 x 31 x 132 x 5931 = 19,241,664

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


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