M000000079

$$\pi=5380\arctan\left(\frac{1}{1710}\right)+332\arctan\left(\frac{1}{5832}\right)-4648\arctan\left(\frac{1}{103862}\right)-1416\arctan\left(\frac{1}{110443}\right)-2324\arctan\left(\frac{1}{740943}\right)-1464\arctan\left(\frac{2}{2513489}\right)+1416\arctan\left(\frac{1}{4841182}\right)+332\arctan\left(\frac{1}{6826318}\right)$$