M000000210

$$\pi=227800256\arctan\left(\frac{1}{227661182}\right)+187578340\arctan\left(\frac{1}{244653118}\right)-80034080\arctan\left(\frac{1}{284862638}\right)+258052932\arctan\left(\frac{1}{307885245}\right)+173889680\arctan\left(\frac{1}{355671793}\right)+43912224\arctan\left(\frac{1}{403478642}\right)+197214844\arctan\left(\frac{1}{403916362}\right)-115624128\arctan\left(\frac{2}{1049730289}\right)-42342444\arctan\left(\frac{1}{727507932}\right)+27265628\arctan\left(\frac{1}{15234751332}\right)+115983700\arctan\left(\frac{2}{58632782131}\right)+197367692\arctan\left(\frac{2}{74522099649}\right)-89538596\arctan\left(\frac{1}{37956026467}\right)+6107352\arctan\left(\frac{1}{106334643058}\right)+86556660\arctan\left(\frac{1}{134520516108}\right)+27077796\arctan\left(\frac{1}{138873731225}\right)+61468536\arctan\left(\frac{1}{169838669284032}\right)$$