M000000083

$$\pi=48000\arctan\left(\frac{1}{32807}\right)+69852\arctan\left(\frac{2}{79011}\right)-63056\arctan\left(\frac{1}{216482}\right)+67276\arctan\left(\frac{1}{390112}\right)+57580\arctan\left(\frac{2}{2885139}\right)-29380\arctan\left(\frac{1}{1610057}\right)+37036\arctan\left(\frac{1}{3449051}\right)-65684\arctan\left(\frac{1}{20951745}\right)-11952\arctan\left(\frac{1}{103224943}\right)-65684\arctan\left(\frac{2}{5926170808454361}\right)$$