(x^3-1)/3=y^2+y
(2)の左辺をA,右辺をBとおく。
x=231962450909459809730129648445961726918966545264838108032284876433051459494924610948624362353071355/1500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
を代入して
A^(1/2)=35109853.4999999964397458964048367123575539532484850311011008809280997113992867138646703995188058010