Q: What are the prime factors of the number 47,890,500?

 A: 2, 3, 5, 7, 4561

Why are those the prime factors of the number 47,890,500?

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 47,890,500

47,890,500
Factor Arrows
223,945,250
Factor Arrows
211,972,625
Factor Arrows
33,990,875
Factor Arrows
5798,175
Factor Arrows
5159,635
Factor Arrows
531,927
Factor Arrows
74,561

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, 7, 4561

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 5 x 7 x 4,561 = 47,890,500

This can also be written as 22 x 31 x 53 x 71 x 4,5611 = 47,890,500

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


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