Stephens' constant
Mathematical constant From Wikipedia, the free encyclopedia
Stephens' constant expresses the density of certain subsets of the prime numbers.[1][2] Let and be two multiplicatively independent integers, that is, except when both and equal zero. Consider the set of prime numbers such that evenly divides for some power . Assuming the validity of the generalized Riemann hypothesis, the density of the set relative to the set of all primes is a rational multiple of
Stephens' constant is closely related to the Artin constant that arises in the study of primitive roots.[3][4]
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