Q: What are the prime factors of the number 688,388,288?

 A: 2, 7, 1536581

Why are those the prime factors of the number 688,388,288?

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 688,388,288

688,388,288
Factor Arrows
2344,194,144
Factor Arrows
2172,097,072
Factor Arrows
286,048,536
Factor Arrows
243,024,268
Factor Arrows
221,512,134
Factor Arrows
210,756,067
Factor Arrows
71,536,581

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, 1536581

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 7 x 1,536,581 = 688,388,288

This can also be written as 26 x 71 x 1,536,5811 = 688,388,288

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


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