Here we will show you how to calculate the factorial of 128 (aka 128 factorial) and give you the approximate scientific notation answer and the exact answer.
Before we begin, note that the factorial of 128 can be written as 128 followed by an exclamation mark like this: 128!
Factorial of 128 means that you multiply 128 by every number below it. Therefore, you calculate the factorial of 128 by multiplying 128 by 127, then by 126, and so on all the way down to 1. In other words, we calculate 128 × 127 × 126 × ... × 1 to get 128 factorial.
The answer to 128 factorial (128!) contains 216 digits and we have listed the exact entire answer at the bottom of this page. However, below is the approximate scientific notation answer to 128 factorial:
3.8562048236 × 10215
The answer above is also sometimes written as 3.8562048236e+215. Regardless, it means that the approximate answer to 128! is 38562048236 followed by 205 more digits.
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Like we promised, below is the exact answer to 128 factorial (128!) with all 216 digits:
385620482362580421735677065923463640617493109590223590278828403276373402575165543560686168588507361534030051833058916347592172932262498857766114955245039357760034644709279247692495585280000000000000000000000000000000
What is the factorial of 129?
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