M000000180

$$\pi=48806264\arctan\left(\frac{1}{24208144}\right)-19619352\arctan\left(\frac{1}{54610269}\right)+18493448\arctan\left(\frac{1}{63199427}\right)+80441780\arctan\left(\frac{1}{100656977}\right)+36511268\arctan\left(\frac{1}{115453918}\right)+20970444\arctan\left(\frac{2}{322564791}\right)-9365084\arctan\left(\frac{1}{201229582}\right)+4516132\arctan\left(\frac{1}{385231007}\right)-19803492\arctan\left(\frac{1}{909140573}\right)-51401112\arctan\left(\frac{1}{1304967682}\right)+26320516\arctan\left(\frac{2}{4532659739}\right)+52802256\arctan\left(\frac{2}{4949475989}\right)+30241900\arctan\left(\frac{2}{6223926959}\right)+2115052\arctan\left(\frac{1}{18986886768}\right)-25914536\arctan\left(\frac{2}{520629831511}\right)$$