Q: What are the prime factors of the number 217,532,416?

 A: 2, 106217

Why are those the prime factors of the number 217,532,416?

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 217,532,416

217,532,416
Factor Arrows
2108,766,208
Factor Arrows
254,383,104
Factor Arrows
227,191,552
Factor Arrows
213,595,776
Factor Arrows
26,797,888
Factor Arrows
23,398,944
Factor Arrows
21,699,472
Factor Arrows
2849,736
Factor Arrows
2424,868
Factor Arrows
2212,434
Factor Arrows
2106,217

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, 106217

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 106,217 = 217,532,416

This can also be written as 211 x 106,2171 = 217,532,416

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


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