Q: What are the prime factors of the number 636,064?

 A: 2, 11, 13, 139

Why are those the prime factors of the number 636,064?

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 636,064

636,064
Factor Arrows
2318,032
Factor Arrows
2159,016
Factor Arrows
279,508
Factor Arrows
239,754
Factor Arrows
219,877
Factor Arrows
111,807
Factor Arrows
13139

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, 11, 13, 139

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 11 x 13 x 139 = 636,064

This can also be written as 25 x 111 x 131 x 1391 = 636,064

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


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