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This tag is for challenges involving the factorial of a number, the product of the numbers from 1 to n

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Calculate the inverse of factorial

Write the shortest code that will take any real number greater than 1 as input and will output its positive inverse factorial. … In other words, it answers the question "what number factorial is equal to this number?". Use the Gamma function to extend the definition for factorial to any real number as described here. …
Jens Renders's user avatar
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