Mathematica > Mathematics and Algorithms > Discrete Mathematics > Combinatorial Functions > Factorial (!)
Mathematica > Mathematics and Algorithms > Mathematical Functions > Integer Functions > Combinatorial Functions > Factorial (!)
BUILT-IN MATHEMATICA SYMBOL

Factorial

n!
gives the factorial of n.

DetailsDetails

  • Mathematical function, suitable for both symbolic and numerical manipulation.
  • For non-integer 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.
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