Q: What are the prime factors of the number 272,816,820?

 A: 2, 3, 5, 19, 241, 331

Why are those the prime factors of the number 272,816,820?

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 272,816,820

272,816,820
Factor Arrows
2136,408,410
Factor Arrows
268,204,205
Factor Arrows
322,734,735
Factor Arrows
37,578,245
Factor Arrows
51,515,649
Factor Arrows
1979,771
Factor Arrows
241331

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, 19, 241, 331

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 19 x 241 x 331 = 272,816,820

This can also be written as 22 x 32 x 51 x 191 x 2411 x 3311 = 272,816,820

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


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