Q: What are the prime factors of the number 216,111,828?

 A: 2, 3, 29, 47, 73, 181

Why are those the prime factors of the number 216,111,828?

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 216,111,828

216,111,828
Factor Arrows
2108,055,914
Factor Arrows
254,027,957
Factor Arrows
318,009,319
Factor Arrows
29621,011
Factor Arrows
4713,213
Factor Arrows
73181

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, 29, 47, 73, 181

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 29 x 47 x 73 x 181 = 216,111,828

This can also be written as 22 x 31 x 291 x 471 x 731 x 1811 = 216,111,828

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


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