Q: What are the prime factors of the number 47,052,900?

 A: 2, 3, 5, 37, 157

Why are those the prime factors of the number 47,052,900?

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 47,052,900

47,052,900
Factor Arrows
223,526,450
Factor Arrows
211,763,225
Factor Arrows
33,921,075
Factor Arrows
31,307,025
Factor Arrows
3435,675
Factor Arrows
3145,225
Factor Arrows
529,045
Factor Arrows
55,809
Factor Arrows
37157

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, 5, 37, 157

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 5 x 5 x 37 x 157 = 47,052,900

This can also be written as 22 x 34 x 52 x 371 x 1571 = 47,052,900

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


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