Q: What are the prime factors of the number 667,444,544?

 A: 2, 13, 23, 2683

Why are those the prime factors of the number 667,444,544?

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 667,444,544

667,444,544
Factor Arrows
2333,722,272
Factor Arrows
2166,861,136
Factor Arrows
283,430,568
Factor Arrows
241,715,284
Factor Arrows
220,857,642
Factor Arrows
210,428,821
Factor Arrows
13802,217
Factor Arrows
1361,709
Factor Arrows
232,683

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, 13, 23, 2683

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 13 x 13 x 23 x 2,683 = 667,444,544

This can also be written as 26 x 132 x 231 x 2,6831 = 667,444,544

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


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