M000000228

$$\pi=599437000\arctan\left(\frac{2}{2358367931}\right)+2682724352\arctan\left(\frac{1}{1454097393}\right)+1748210480\arctan\left(\frac{1}{1479406293}\right)-251174884\arctan\left(\frac{2}{5493779561}\right)-1711033224\arctan\left(\frac{1}{4038832337}\right)+551178140\arctan\left(\frac{1}{4474115807}\right)+689903552\arctan\left(\frac{1}{6608082112}\right)-856753168\arctan\left(\frac{2}{16758521543}\right)+2183217088\arctan\left(\frac{2}{36523075989}\right)-1818479844\arctan\left(\frac{1}{18710140581}\right)-540597244\arctan\left(\frac{1}{29546599818}\right)-45445864\arctan\left(\frac{1}{38185029043}\right)+8548300\arctan\left(\frac{2}{112899039159}\right)-943345876\arctan\left(\frac{1}{265542904947}\right)-1295883392\arctan\left(\frac{1}{378137211957}\right)+985435188\arctan\left(\frac{1}{3737240479718}\right)+127682688\arctan\left(\frac{1}{11830545643782}\right)+478665032\arctan\left(\frac{1}{46150510628682}\right)+754226992\arctan\left(\frac{1}{69971515635443}\right)$$