Q: What are the prime factors of the number 211,120,320?

 A: 2, 3, 5, 219917

Why are those the prime factors of the number 211,120,320?

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 211,120,320

211,120,320
Factor Arrows
2105,560,160
Factor Arrows
252,780,080
Factor Arrows
226,390,040
Factor Arrows
213,195,020
Factor Arrows
26,597,510
Factor Arrows
23,298,755
Factor Arrows
31,099,585
Factor Arrows
5219,917

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, 219917

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 3 x 5 x 219,917 = 211,120,320

This can also be written as 26 x 31 x 51 x 219,9171 = 211,120,320

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


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