IntegerLength (Built-in Mathematica Symbol)

IntegerLength[n] gives the number of digits in the base 10 representation of the integer n.IntegerLength[n, b] gives the number of digits in the base b representation of n.

InverseGudermannian (Built-in Mathematica Symbol)

InverseGudermannian[z] gives the inverse Gudermannian function gd -1 (z).

KroneckerSymbol (Built-in Mathematica Symbol)

KroneckerSymbol[n, m] gives the Kronecker symbol (n/m).

LiouvilleLambda (Built-in Mathematica Symbol)

LiouvilleLambda[n] gives the Liouville function \[Lambda](n).

MangoldtLambda (Built-in Mathematica Symbol)

MangoldtLambda[n] gives the von Mangoldt function \[CapitalLambda](n).

PrimeNu (Built-in Mathematica Symbol)

PrimeNu[n] gives the number of distinct primes \[Nu](n) in n.

PrimeOmega (Built-in Mathematica Symbol)

PrimeOmega[n] gives the number of prime factors counting multiplicities \[CapitalOmega](n) in n.

PrimePi (Built-in Mathematica Symbol)

PrimePi[x] gives the number of primes \[Pi] (x) less than or equal to x.

PrimeZetaP (Built-in Mathematica Symbol)

PrimeZetaP[s] gives prime zeta function P(s).

QFactorial (Built-in Mathematica Symbol)

QFactorial[n, q] gives the q-factorial [n] q!.