Q: What are the prime factors of the number 19,297,536?

 A: 2, 3, 25127

Why are those the prime factors of the number 19,297,536?

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 19,297,536

19,297,536
Factor Arrows
29,648,768
Factor Arrows
24,824,384
Factor Arrows
22,412,192
Factor Arrows
21,206,096
Factor Arrows
2603,048
Factor Arrows
2301,524
Factor Arrows
2150,762
Factor Arrows
275,381
Factor Arrows
325,127

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, 25127

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 25,127 = 19,297,536

This can also be written as 28 x 31 x 25,1271 = 19,297,536

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


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