internal virtual double Compute_modPow()
{
long e = E.value;
long n = N.value;
double s = 0;
for (; e > E.limit; e += E.delta)
{
s = Modular.AddMod(s, Two.ModPow(BigInteger.ValueOf(e), BigInteger.ValueOf(n)) /
n);
n += N.delta;
}
return(s);
}