Q: What are the prime factors of the number 234,212,220?

 A: 2, 3, 5, 11, 23, 37, 139

Why are those the prime factors of the number 234,212,220?

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 234,212,220

234,212,220
Factor Arrows
2117,106,110
Factor Arrows
258,553,055
Factor Arrows
319,517,685
Factor Arrows
36,505,895
Factor Arrows
51,301,179
Factor Arrows
11118,289
Factor Arrows
235,143
Factor Arrows
37139

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, 5, 11, 23, 37, 139

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 11 x 23 x 37 x 139 = 234,212,220

This can also be written as 22 x 32 x 51 x 111 x 231 x 371 x 1391 = 234,212,220

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


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