Q: What are the prime factors of the number 217,155,183?

 A: 3, 7, 37, 279479

Why are those the prime factors of the number 217,155,183?

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 217,155,183

217,155,183
Factor Arrows
372,385,061
Factor Arrows
710,340,723
Factor Arrows
37279,479

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:

3, 7, 37, 279479

We can check our work by multiplying all of the prime factors together: 3 x 7 x 37 x 279,479 = 217,155,183

This can also be written as 31 x 71 x 371 x 279,4791 = 217,155,183

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


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