Q: What are the prime factors of the number 47,880,720?

 A: 2, 3, 5, 821

Why are those the prime factors of the number 47,880,720?

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 47,880,720

47,880,720
Factor Arrows
223,940,360
Factor Arrows
211,970,180
Factor Arrows
25,985,090
Factor Arrows
22,992,545
Factor Arrows
3997,515
Factor Arrows
3332,505
Factor Arrows
3110,835
Factor Arrows
336,945
Factor Arrows
312,315
Factor Arrows
34,105
Factor Arrows
5821

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, 821

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 3 x 3 x 5 x 821 = 47,880,720

This can also be written as 24 x 36 x 51 x 8211 = 47,880,720

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


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