Q: What are the prime factors of the number 66,665,564?

 A: 2, 7, 37, 229, 281

Why are those the prime factors of the number 66,665,564?

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 66,665,564

66,665,564
Factor Arrows
233,332,782
Factor Arrows
216,666,391
Factor Arrows
72,380,913
Factor Arrows
3764,349
Factor Arrows
229281

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, 7, 37, 229, 281

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 37 x 229 x 281 = 66,665,564

This can also be written as 22 x 71 x 371 x 2291 x 2811 = 66,665,564

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


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