GCD[n1, n2, ...]
gives the greatest common divisor of the .


  • Integer mathematical function, suitable for both symbolic and numerical manipulation.
  • GCD works with ordinary and Gaussian integers.
  • GCD works not only with integers but also rational numbers, both real and complex.
  • For rational numbers , GCD[r1, r2, ...] gives the greatest rational number r for which all the are integers.
  • GCD has attributes Flat and Orderless.
  • GCD automatically threads over lists.
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