Is this the irrationality measure? https://mathworld.wolfram.com/IrrationalityMeasure.html https://mathworld.wolfram.com/IrrationalityMeasure.html I don't thi

Is this the irrationality measure? https://mathworld.wolfram.com/IrrationalityMeasure.html https://mathworld.wolfram.com/IrrationalityMeasure.html I don't think the value for pi is known. The value for e is 2, which is the same value for e.g. sqrt 2.