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numtheory[pi] - number of primes less than or equal to
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Parameters
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n
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expression, assumed to be of type integer
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Description
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The function pi(n) computes the number of prime numbers less than or equal to the given integer n.
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Examples
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![nops(select('isprime', [`$`(2 .. 10000)]))](/support/helpjp/helpview.aspx?si=7005/file04328/math79.png)
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![plot([Pi(floor(x)), Li(x), x/ln(x)], x = 1 .. 500, numpoints = 500)](/support/helpjp/helpview.aspx?si=7005/file04328/math100.png)
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