Q: What are the prime factors of the number 47,772,648?

 A: 2, 3, 7, 11, 1231

Why are those the prime factors of the number 47,772,648?

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 47,772,648

47,772,648
Factor Arrows
223,886,324
Factor Arrows
211,943,162
Factor Arrows
25,971,581
Factor Arrows
31,990,527
Factor Arrows
3663,509
Factor Arrows
794,787
Factor Arrows
713,541
Factor Arrows
111,231

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, 11, 1231

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 7 x 7 x 11 x 1,231 = 47,772,648

This can also be written as 23 x 32 x 72 x 111 x 1,2311 = 47,772,648

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


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