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IsPrime ​

Tests whether n is a prime number.

WikipediaPrimality testPrime numberMathWorldPrimalityTestPrimeNumberWikidataQ49008Encyclopedia of MathematicsPrime_numbernLabprime numberBritannicatopic/prime-numberOEISA000040Wolfram LanguagePrimeQ✓Rosetta CodePrimality by trial division
IsPrime(n)tests whether is prime.
SageMathis_prime(n)SymPyisprime(n)

Domain: Number theory

Details
  • A prime has no positive divisors other than 1 and itself; 1 itself is not prime.
  • Returns False unless n is provably prime -- there's no third "unknown" outcome.
  • Threads element-wise over a list argument.
  • compute-engine's IsPrime requires a positive integer and returns False for negatives.

Examples

See also: FactorInteger, NextPrime