Compositeness Test
A test which always identifies prime numbers correctly, but may incorrectly identify a composite number as a prime.
See also
Primality TestExplore with Wolfram|Alpha
WolframAlpha
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Cite this as:
Weisstein, Eric W. "Compositeness Test." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/CompositenessTest.html