Q: What are the prime factors of the number 68,666,688?

 A: 2, 3, 97, 1229

Why are those the prime factors of the number 68,666,688?

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 68,666,688

68,666,688
Factor Arrows
234,333,344
Factor Arrows
217,166,672
Factor Arrows
28,583,336
Factor Arrows
24,291,668
Factor Arrows
22,145,834
Factor Arrows
21,072,917
Factor Arrows
3357,639
Factor Arrows
3119,213
Factor Arrows
971,229

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, 3, 97, 1229

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 3 x 3 x 97 x 1,229 = 68,666,688

This can also be written as 26 x 32 x 971 x 1,2291 = 68,666,688

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


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