Q: What are the prime factors of the number 213,210,320?

 A: 2, 5, 29, 3169

Why are those the prime factors of the number 213,210,320?

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 213,210,320

213,210,320
Factor Arrows
2106,605,160
Factor Arrows
253,302,580
Factor Arrows
226,651,290
Factor Arrows
213,325,645
Factor Arrows
52,665,129
Factor Arrows
2991,901
Factor Arrows
293,169

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, 5, 29, 3169

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 29 x 29 x 3,169 = 213,210,320

This can also be written as 24 x 51 x 292 x 3,1691 = 213,210,320

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


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