Q: What are the prime factors of the number 738,657,664?

 A: 2, 1277, 4519

Why are those the prime factors of the number 738,657,664?

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 738,657,664

738,657,664
Factor Arrows
2369,328,832
Factor Arrows
2184,664,416
Factor Arrows
292,332,208
Factor Arrows
246,166,104
Factor Arrows
223,083,052
Factor Arrows
211,541,526
Factor Arrows
25,770,763
Factor Arrows
1,2774,519

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, 1277, 4519

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 1,277 x 4,519 = 738,657,664

This can also be written as 27 x 1,2771 x 4,5191 = 738,657,664

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


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