Q: What are the prime factors of the number 47,742,016?

 A: 2, 7, 61, 1747

Why are those the prime factors of the number 47,742,016?

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 47,742,016

47,742,016
Factor Arrows
223,871,008
Factor Arrows
211,935,504
Factor Arrows
25,967,752
Factor Arrows
22,983,876
Factor Arrows
21,491,938
Factor Arrows
2745,969
Factor Arrows
7106,567
Factor Arrows
611,747

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, 7, 61, 1747

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 7 x 61 x 1,747 = 47,742,016

This can also be written as 26 x 71 x 611 x 1,7471 = 47,742,016

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


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