"The powerful prime minister of Qatar is ready to plunk down nearly $100 million for the city’s most expensive penthouse — an ultra-luxe, two-story pad atop the under-construction One57 condominium across the street from Carnegie Hall, The Post has learned. Sheik Hamad bin Jassim bin Jaber al-Thani first eyed the spread after a Fifth Avenue co-op board rejected his bid to spend $31.5 million on two apartments owned by the late Huguette Clark, an eccentric American copper heiress, sources said."