M000000246

$$\pi=4911441524\arctan\left(\frac{1}{1454097393}\right)+1018370564\arctan\left(\frac{2}{3340159163}\right)-1353718212\arctan\left(\frac{1}{2189376182}\right)-874998960\arctan\left(\frac{2}{7650575553}\right)+1078102032\arctan\left(\frac{2}{7850392761}\right)+2782708308\arctan\left(\frac{1}{3985944689}\right)-2610473480\arctan\left(\frac{1}{4038832337}\right)-1817188576\arctan\left(\frac{1}{6608082112}\right)+496910824\arctan\left(\frac{1}{9392165427}\right)+1194273564\arctan\left(\frac{1}{12957904393}\right)-1863979928\arctan\left(\frac{1}{18710140581}\right)-2769314416\arctan\left(\frac{1}{29546599818}\right)+929047344\arctan\left(\frac{2}{112899039159}\right)-4136372300\arctan\left(\frac{1}{225891903693}\right)-2527180184\arctan\left(\frac{1}{265542904947}\right)+3273708076\arctan\left(\frac{1}{378137211957}\right)+2339099180\arctan\left(\frac{1}{3737240479718}\right)+1756962860\arctan\left(\frac{1}{11830545643782}\right)-599437000\arctan\left(\frac{1}{28148191112477}\right)$$