M000000124

$$\pi=183\arctan\left(\frac{1}{57}\right)-55\arctan\left(\frac{1}{1023}\right)-89\arctan\left(\frac{1}{5832}\right)+48\arctan\left(\frac{1}{110443}\right)-48\arctan\left(\frac{1}{4841182}\right)-34\arctan\left(\frac{1}{6826318}\right)$$