Q: What are the prime factors of the number 215,183,268?

 A: 2, 3, 37, 73, 2213

Why are those the prime factors of the number 215,183,268?

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 215,183,268

215,183,268
Factor Arrows
2107,591,634
Factor Arrows
253,795,817
Factor Arrows
317,931,939
Factor Arrows
35,977,313
Factor Arrows
37161,549
Factor Arrows
732,213

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, 37, 73, 2213

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 37 x 73 x 2,213 = 215,183,268

This can also be written as 22 x 32 x 371 x 731 x 2,2131 = 215,183,268

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


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