ⓘ This web page is about the old AlgoSim 2 software. Perhaps you are looking for the new Algosim 3 application?
AlgoSim
Homepage | Screenshots | Gallery of Visualisation | User's Guide | Function Reference | Download | FAQ | Support | Bugs and Solutions | Donate

Reference: OPFACT

n! = OPFACT(n) returns the factorial of the natural number n, i.e. the number n⋅(n−1)⋅...⋅1.