Q: What are the prime factors of the number 20,013,305?

 A: 5, 13, 47, 6551

Why are those the prime factors of the number 20,013,305?

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 20,013,305

20,013,305
Factor Arrows
54,002,661
Factor Arrows
13307,897
Factor Arrows
476,551

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:

5, 13, 47, 6551

We can check our work by multiplying all of the prime factors together: 5 x 13 x 47 x 6,551 = 20,013,305

This can also be written as 51 x 131 x 471 x 6,5511 = 20,013,305

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


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