Q: What are the prime factors of the number 233,128?

 A: 2, 7, 23, 181

Why are those the prime factors of the number 233,128?

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 233,128

233,128
Factor Arrows
2116,564
Factor Arrows
258,282
Factor Arrows
229,141
Factor Arrows
74,163
Factor Arrows
23181

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, 7, 23, 181

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 23 x 181 = 233,128

This can also be written as 23 x 71 x 231 x 1811 = 233,128

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


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