Q: What are the prime factors of the number 47,149,056?

 A: 2, 3, 1279

Why are those the prime factors of the number 47,149,056?

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 47,149,056

47,149,056
Factor Arrows
223,574,528
Factor Arrows
211,787,264
Factor Arrows
25,893,632
Factor Arrows
22,946,816
Factor Arrows
21,473,408
Factor Arrows
2736,704
Factor Arrows
2368,352
Factor Arrows
2184,176
Factor Arrows
292,088
Factor Arrows
246,044
Factor Arrows
223,022
Factor Arrows
211,511
Factor Arrows
33,837
Factor Arrows
31,279

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, 1279

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 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 1,279 = 47,149,056

This can also be written as 212 x 32 x 1,2791 = 47,149,056

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


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