Q: What are the prime factors of the number 213,140,322?

 A: 2, 3, 17, 193, 401

Why are those the prime factors of the number 213,140,322?

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 213,140,322

213,140,322
Factor Arrows
2106,570,161
Factor Arrows
335,523,387
Factor Arrows
311,841,129
Factor Arrows
33,947,043
Factor Arrows
31,315,681
Factor Arrows
1777,393
Factor Arrows
193401

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, 17, 193, 401

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 17 x 193 x 401 = 213,140,322

This can also be written as 21 x 34 x 171 x 1931 x 4011 = 213,140,322

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


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