Prime counting function | Desmos

Expression 1: 1 plus Start sum from "n" equals 3 to "x" , end sum, Start product from "k" equals 2 to StartRoot, "n" , EndRoot , end product, left parenthesis, 1 minus floor left parenthesis, cos left parenthesis, pi times StartFraction, "n" Over "k" , EndFraction , right parenthesis squared , right parenthesis , right parenthesis

1

Expression 2: 1 plus Start sum from "n" equals 3 to "x" , end sum, min left parenthesis, 1 , Start product from "k" equals 2 to StartRoot, "n" , EndRoot , end product, mod left parenthesis, "n" , "k" , right parenthesis , right parenthesis

2

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