M000000297

$$\pi=-1950085840\arctan\left(\frac{2}{112899039159}\right)-51792427044\arctan\left(\frac{1}{120563046313}\right)+34351141236\arctan\left(\frac{1}{121409547033}\right)+55957203804\arctan\left(\frac{1}{138873731225}\right)+114504878624\arctan\left(\frac{1}{202954204459}\right)+255203095592\arctan\left(\frac{1}{261002206018}\right)+85193553324\arctan\left(\frac{1}{269007136889}\right)+52414315512\arctan\left(\frac{1}{343123176943}\right)+230757150944\arctan\left(\frac{1}{548275361132}\right)+192611683116\arctan\left(\frac{1}{656902304557}\right)+81204271916\arctan\left(\frac{1}{1372432573478}\right)+92839355812\arctan\left(\frac{1}{1374662101743}\right)+75298999828\arctan\left(\frac{1}{1622274975907}\right)+20004336152\arctan\left(\frac{1}{2710120765097}\right)-18030930624\arctan\left(\frac{1}{3761284561432}\right)+20033332988\arctan\left(\frac{2}{13078246979509}\right)+148083505588\arctan\left(\frac{1}{10892900268195}\right)-9874911316\arctan\left(\frac{1}{17780261434697}\right)+20573038596\arctan\left(\frac{1}{38759264489343}\right)+130701657644\arctan\left(\frac{1}{69971515635443}\right)+54986941560\arctan\left(\frac{1}{169838669284032}\right)-123466500504\arctan\left(\frac{1}{772654028018543}\right)-27571639548\arctan\left(\frac{1}{1948025182233307}\right)-145253671324\arctan\left(\frac{1}{7411710404595173}\right)$$