Q: What are the prime factors of the number 688,376,216?

 A: 2, 11, 61, 128237

Why are those the prime factors of the number 688,376,216?

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 688,376,216

688,376,216
Factor Arrows
2344,188,108
Factor Arrows
2172,094,054
Factor Arrows
286,047,027
Factor Arrows
117,822,457
Factor Arrows
61128,237

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, 61, 128237

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 11 x 61 x 128,237 = 688,376,216

This can also be written as 23 x 111 x 611 x 128,2371 = 688,376,216

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


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