Q: What are the prime factors of the number 47,755,440?

 A: 2, 3, 5, 22109

Why are those the prime factors of the number 47,755,440?

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 47,755,440

47,755,440
Factor Arrows
223,877,720
Factor Arrows
211,938,860
Factor Arrows
25,969,430
Factor Arrows
22,984,715
Factor Arrows
3994,905
Factor Arrows
3331,635
Factor Arrows
3110,545
Factor Arrows
522,109

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, 22109

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 5 x 22,109 = 47,755,440

This can also be written as 24 x 33 x 51 x 22,1091 = 47,755,440

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


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