M000325

$$\pi=964621941320\arctan\left(\frac{2}{1302521889511}\right)+801544080124\arctan\left(\frac{2}{1957312491989}\right)+1136880689308\arctan\left(\frac{1}{1688341225737}\right)-315209113732\arctan\left(\frac{1}{2056424542203}\right)-882938131728\arctan\left(\frac{1}{2292939666693}\right)+1151484344424\arctan\left(\frac{1}{2423153939240}\right)+1493227383692\arctan\left(\frac{2}{6646491492891}\right)-1572759529576\arctan\left(\frac{1}{3419484435037}\right)+636098238244\arctan\left(\frac{1}{4077098364516}\right)+687877334112\arctan\left(\frac{1}{5142102426318}\right)-442885471352\arctan\left(\frac{1}{18104444568932}\right)-1562677092692\arctan\left(\frac{2}{43777069138111}\right)+1829462255496\arctan\left(\frac{1}{27224803284193}\right)-2035983401896\arctan\left(\frac{1}{29308445163057}\right)+45320993024\arctan\left(\frac{1}{35527561593282}\right)+1627956411436\arctan\left(\frac{1}{36129306114972}\right)-515830542576\arctan\left(\frac{1}{78277699747376}\right)+1247563175020\arctan\left(\frac{1}{79090959114159}\right)+753844357884\arctan\left(\frac{1}{110440936365807}\right)+471354707464\arctan\left(\frac{1}{159493341500663}\right)-1082869048816\arctan\left(\frac{1}{169838669284032}\right)-1874886146912\arctan\left(\frac{1}{229180244713453}\right)-69375793296\arctan\left(\frac{1}{339124474237367}\right)+89779697868\arctan\left(\frac{1}{526264109797943}\right)-954816184976\arctan\left(\frac{1}{1427056404016693}\right)+339981823720\arctan\left(\frac{1}{3244023007885213}\right)-148379815840\arctan\left(\frac{1}{9505680304081018}\right)$$