M000000100

$$\pi=6348\arctan\left(\frac{1}{2852}\right)+3552\arctan\left(\frac{1}{4246}\right)+1436\arctan\left(\frac{1}{39307}\right)+1924\arctan\left(\frac{1}{55603}\right)+2500\arctan\left(\frac{1}{211050}\right)+1180\arctan\left(\frac{2}{671831}\right)-2832\arctan\left(\frac{1}{390112}\right)+1180\arctan\left(\frac{1}{140716812943}\right)$$