Q: What are the prime factors of the number 5,194,816?

 A: 2, 11, 47, 157

Why are those the prime factors of the number 5,194,816?

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 5,194,816

5,194,816
Factor Arrows
22,597,408
Factor Arrows
21,298,704
Factor Arrows
2649,352
Factor Arrows
2324,676
Factor Arrows
2162,338
Factor Arrows
281,169
Factor Arrows
117,379
Factor Arrows
47157

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, 11, 47, 157

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 11 x 47 x 157 = 5,194,816

This can also be written as 26 x 111 x 471 x 1571 = 5,194,816

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


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