M000000247

$$\pi=2265623728\arctan\left(\frac{1}{1426584882}\right)+\frac{8175664252}{3}\arctan\left(\frac{2}{5493779561}\right)+1542215492\arctan\left(\frac{2}{10355370165}\right)\frac{-3352615820}{3}\arctan\left(\frac{1}{8634733487}\right)+\frac{8025027340}{3}\arctan\left(\frac{1}{8895085098}\right)+1811401504\arctan\left(\frac{1}{12957904393}\right)\frac{-2657413876}{3}\arctan\left(\frac{1}{38185029043}\right)\frac{-5864148436}{3}\arctan\left(\frac{2}{112899039159}\right)+\frac{9217837112}{3}\arctan\left(\frac{1}{66492889557}\right)-1702255108\arctan\left(\frac{1}{82926000318}\right)+\frac{4075495876}{3}\arctan\left(\frac{1}{102428655030}\right)\frac{-10846424536}{3}\arctan\left(\frac{1}{120563046313}\right)\frac{-220914544}{3}\arctan\left(\frac{1}{250645741818}\right)\frac{-243643328}{3}\arctan\left(\frac{2}{672369361511}\right)+717073488\arctan\left(\frac{1}{548275361132}\right)\frac{-2402110076}{3}\arctan\left(\frac{1}{579766497643}\right)+\frac{5037854564}{3}\arctan\left(\frac{1}{838010977198}\right)\frac{-5835777928}{3}\arctan\left(\frac{1}{13474294213307}\right)\frac{-3821152972}{3}\arctan\left(\frac{1}{46150510628682}\right)+\frac{5558982064}{3}\arctan\left(\frac{1}{69971515635443}\right)$$