M000000187

$$\pi=29427040\arctan\left(\frac{1}{27872057}\right)+29002772\arctan\left(\frac{1}{39451318}\right)+35072334\arctan\left(\frac{1}{42443947}\right)+38065980\arctan\left(\frac{1}{144235918}\right)+2322866\arctan\left(\frac{2}{322564791}\right)+46903316\arctan\left(\frac{1}{201229582}\right)+1468944\arctan\left(\frac{1}{284862638}\right)-14261956\arctan\left(\frac{1}{1514342682}\right)+27789460\arctan\left(\frac{2}{4204410541}\right)-8154604\arctan\left(\frac{1}{7427844818}\right)+34734946\arctan\left(\frac{1}{7959681215}\right)+25150576\arctan\left(\frac{2}{75525552427}\right)-12100544\arctan\left(\frac{2}{127939586297}\right)+16902228\arctan\left(\frac{1}{77000574832}\right)+3752632\arctan\left(\frac{2}{1087840667761}\right)-9024030\arctan\left(\frac{1}{169838669284032}\right)$$