Q: What are the prime factors of the number 20,413,344?

 A: 2, 3, 7, 37, 821

Why are those the prime factors of the number 20,413,344?

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 20,413,344

20,413,344
Factor Arrows
210,206,672
Factor Arrows
25,103,336
Factor Arrows
22,551,668
Factor Arrows
21,275,834
Factor Arrows
2637,917
Factor Arrows
3212,639
Factor Arrows
730,377
Factor Arrows
37821

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, 7, 37, 821

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 7 x 37 x 821 = 20,413,344

This can also be written as 25 x 31 x 71 x 371 x 8211 = 20,413,344

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


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