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!.

QGamma (Built-in Mathematica Symbol)

QGamma[z, q] gives the q-gamma function \[CapitalGamma]_q (z).

RamanujanTauTheta (Built-in Mathematica Symbol)

RamanujanTauTheta[t] gives the Ramanujan tau theta function \[Theta](t).

RamanujanTauZ (Built-in Mathematica Symbol)

RamanujanTauZ[t] gives the Ramanujan tau Z-function Z(t).

RiemannR (Built-in Mathematica Symbol)

RiemannR[x] gives the Riemann prime counting function R(x).

SphericalBesselJ (Built-in Mathematica Symbol)

SphericalBesselJ[n, z] gives the spherical Bessel function of the first kind j_n (z).

SphericalBesselY (Built-in Mathematica Symbol)

SphericalBesselY[n, z] gives the spherical Bessel function of the second kind y_n (z).