Q: What are the prime factors of the number 664,006,656?

 A: 2, 3, 54037

Why are those the prime factors of the number 664,006,656?

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 664,006,656

664,006,656
Factor Arrows
2332,003,328
Factor Arrows
2166,001,664
Factor Arrows
283,000,832
Factor Arrows
241,500,416
Factor Arrows
220,750,208
Factor Arrows
210,375,104
Factor Arrows
25,187,552
Factor Arrows
22,593,776
Factor Arrows
21,296,888
Factor Arrows
2648,444
Factor Arrows
2324,222
Factor Arrows
2162,111
Factor Arrows
354,037

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, 54037

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 2 x 3 x 54,037 = 664,006,656

This can also be written as 212 x 31 x 54,0371 = 664,006,656

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


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