Q: What are the prime factors of the number 220,434,432?

 A: 2, 3, 17939

Why are those the prime factors of the number 220,434,432?

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 220,434,432

220,434,432
Factor Arrows
2110,217,216
Factor Arrows
255,108,608
Factor Arrows
227,554,304
Factor Arrows
213,777,152
Factor Arrows
26,888,576
Factor Arrows
23,444,288
Factor Arrows
21,722,144
Factor Arrows
2861,072
Factor Arrows
2430,536
Factor Arrows
2215,268
Factor Arrows
2107,634
Factor Arrows
253,817
Factor Arrows
317,939

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, 17939

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 17,939 = 220,434,432

This can also be written as 212 x 31 x 17,9391 = 220,434,432

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


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