M000000142

$$\pi=1536424\arctan\left(\frac{2}{2577211}\right)+7134152\arctan\left(\frac{1}{4432952}\right)+2720844\arctan\left(\frac{1}{25720843}\right)+5099184\arctan\left(\frac{1}{69392058}\right)+8537092\arctan\left(\frac{1}{86748355}\right)+4390508\arctan\left(\frac{1}{113014933}\right)+4325324\arctan\left(\frac{1}{125329147}\right)-1289832\arctan\left(\frac{1}{226983307}\right)-1385960\arctan\left(\frac{1}{480808760}\right)-1718524\arctan\left(\frac{1}{1085592682}\right)-591312\arctan\left(\frac{1}{2701984943}\right)-7198400\arctan\left(\frac{1}{6436804193}\right)+5305304\arctan\left(\frac{1}{14033378718}\right)-841916\arctan\left(\frac{1}{735834181077}\right)$$