Q: What are the prime factors of the number 47,437,600?

 A: 2, 5, 7, 43, 197

Why are those the prime factors of the number 47,437,600?

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 47,437,600

47,437,600
Factor Arrows
223,718,800
Factor Arrows
211,859,400
Factor Arrows
25,929,700
Factor Arrows
22,964,850
Factor Arrows
21,482,425
Factor Arrows
5296,485
Factor Arrows
559,297
Factor Arrows
78,471
Factor Arrows
43197

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, 5, 7, 43, 197

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 5 x 7 x 43 x 197 = 47,437,600

This can also be written as 25 x 52 x 71 x 431 x 1971 = 47,437,600

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


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