Wolfram Language & System 10.0 (2014)|Legacy Documentation

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gives the factorial of n.


  • Mathematical function, suitable for both symbolic and numerical manipulation.
  • For noninteger n, the numerical value of n! is given by Gamma[1+n].
  • For integers and half integers, Factorial automatically evaluates to exact values.
  • Factorial can be evaluated to arbitrary numerical precision.
  • Factorial automatically threads over lists.
Introduced in 1988