Q: What are the prime factors of the number 217,667,240?

 A: 2, 5, 7, 777383

Why are those the prime factors of the number 217,667,240?

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 217,667,240

217,667,240
Factor Arrows
2108,833,620
Factor Arrows
254,416,810
Factor Arrows
227,208,405
Factor Arrows
55,441,681
Factor Arrows
7777,383

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, 5, 7, 777383

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 7 x 777,383 = 217,667,240

This can also be written as 23 x 51 x 71 x 777,3831 = 217,667,240

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


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