real part of ((11+i*sqrt(3))^(15/71)+(15/35+i*sqrt(41))^(13/21))/(13+i*sqrt(47))^(19/11)^(((11+i*sqrt(3))^(15/71)+(15/35+i*sqrt(41))^(13/21))/(13+i*sqrt(47))^(19/11))^(1/2)