Q: What are the prime factors of the number 213,055,436?

 A: 2, 11, 19, 31, 8221

Why are those the prime factors of the number 213,055,436?

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 213,055,436

213,055,436
Factor Arrows
2106,527,718
Factor Arrows
253,263,859
Factor Arrows
114,842,169
Factor Arrows
19254,851
Factor Arrows
318,221

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, 19, 31, 8221

We can check our work by multiplying all of the prime factors together: 2 x 2 x 11 x 19 x 31 x 8,221 = 213,055,436

This can also be written as 22 x 111 x 191 x 311 x 8,2211 = 213,055,436

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


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