One of the widely reported achievements was in 1998 when the country joined the nuclear club. In response to India's nuclear tests on 11 May and 13 May 1998, under codename Operation Shakti, in the long-constructed Pokhran Test Range (PTR). Under Prime Minister Nawaz Sharif, the Pakistan Atomic Energy Commission (PAEC) conducted five simultaneous tests at the Chagai Hills under codename Chagai-I on 28 May 1998. PAEC carried out another test in the Kharan Desert, under Chagai-II, meaning it had tested six devices in under one week. With the testing of these atomic devices, Pakistan became the seventh nuclear power in the world, and the only Muslim-majority country to have mastered the technology. On 13 August 2011, SUPARCO launched its first indigenously developed geosynchronous satellite, Paksat-1R also from XLSC in China.