represents the domain of prime numbers, as in xPrimes.


  • xPrimes evaluates only if x is a numeric quantity.
  • Simplify[exprPrimes] can be used to try to determine whether an expression corresponds to a prime number.
  • The domain of primes is taken to be a subset of the domain of integers.
  • PrimeQ[expr] returns False unless expr explicitly has head Integer.
  • Primes is output in TraditionalForm as .
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