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Built-in Functions / Mathematical Functions / Number Theory /

PrimePi

Usage

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


Notes

• The argument of PrimePi can be any positive real number.
• PrimePi[1] gives 0.
• See Section 3.2.5.
• Implementation notes: see Section A.9.4.
• See also: Prime, Zeta.
• New in Version 2.
Further Examples


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