What is the largest dome you can make entirely out of equilateral triangles?

I’ve been looking and I found the geodesic circle, but I later found that the sides on it aren’t equal, making them not equilateral. The amount of triangles at a single corner does not matter to me, but it’d obviously have to be 5 or below because 6 would make a plane. The base does not need to be included as im only looking for the curved part.