Q: What are the prime factors of the number 19,923,525?

 A: 3, 5, 73, 1213

Why are those the prime factors of the number 19,923,525?

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 19,923,525

19,923,525
Factor Arrows
36,641,175
Factor Arrows
32,213,725
Factor Arrows
5442,745
Factor Arrows
588,549
Factor Arrows
731,213

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:

3, 5, 73, 1213

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 5 x 73 x 1,213 = 19,923,525

This can also be written as 32 x 52 x 731 x 1,2131 = 19,923,525

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


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