M000000169

$$\pi=25198742\arctan\left(\frac{2}{16859469}\right)+7508496\arctan\left(\frac{1}{82189674}\right)+14639084\arctan\left(\frac{1}{159358932}\right)-16449028\arctan\left(\frac{1}{162166243}\right)+8315828\arctan\left(\frac{1}{213495433}\right)+15111518\arctan\left(\frac{1}{225823278}\right)+511676\arctan\left(\frac{1}{284862638}\right)-13328014\arctan\left(\frac{1}{403478642}\right)+1879054\arctan\left(\frac{1}{657922943}\right)+4824150\arctan\left(\frac{1}{727507932}\right)-19179734\arctan\left(\frac{2}{1498434239}\right)+24698558\arctan\left(\frac{2}{4417955351}\right)+5109944\arctan\left(\frac{1}{7804016832}\right)+8026392\arctan\left(\frac{2}{74522099649}\right)-9197474\arctan\left(\frac{1}{293153860797}\right)$$