Q: What are the prime factors of the number 219,845,556?

 A: 2, 3, 7, 41543

Why are those the prime factors of the number 219,845,556?

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 219,845,556

219,845,556
Factor Arrows
2109,922,778
Factor Arrows
254,961,389
Factor Arrows
318,320,463
Factor Arrows
36,106,821
Factor Arrows
32,035,607
Factor Arrows
7290,801
Factor Arrows
741,543

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, 7, 41543

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 7 x 7 x 41,543 = 219,845,556

This can also be written as 22 x 33 x 72 x 41,5431 = 219,845,556

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


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