This is documentation for Mathematica 4, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)



FilledSmallSquarePrimePi[x] gives the number of primes less than or equal to x.

FilledSmallSquare The argument of PrimePi can be any positive real number.

FilledSmallSquarePrimePi[1] gives 0.

FilledSmallSquare See The Mathematica Book: Section 3.2.4.

FilledSmallSquare Implementation Notes: see section A.9.4.

FilledSmallSquare See also: Prime, Zeta.

Further Examples