M000000029

$$\pi=2324\arctan\left(\frac{1}{580}\right)-1592\arctan\left(\frac{1}{1710}\right)+332\arctan\left(\frac{1}{5827}\right)+908\arctan\left(\frac{2}{226043}\right)+860\arctan\left(\frac{2}{2513489}\right)-332\arctan\left(\frac{1}{1561886607}\right)+908\arctan\left(\frac{1}{109027476193}\right)-908\arctan\left(\frac{2}{3375905320682366575989}\right)$$