Q: What are the prime factors of the number 215,404,618?

 A: 2, 11, 13, 277, 2719

Why are those the prime factors of the number 215,404,618?

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 215,404,618

215,404,618
Factor Arrows
2107,702,309
Factor Arrows
119,791,119
Factor Arrows
13753,163
Factor Arrows
2772,719

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, 11, 13, 277, 2719

We can check our work by multiplying all of the prime factors together: 2 x 11 x 13 x 277 x 2,719 = 215,404,618

This can also be written as 21 x 111 x 131 x 2771 x 2,7191 = 215,404,618

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


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