The first element with an atomic number greater than 100 is Fermium (symbol: Fm). Fermium has an atomic number of 100, and it is a synthetic element that does not occur naturally on Earth. It was first synthesized in 1952 by a team of scientists led by Albert Ghiorso at the University of California, Berkeley, USA. Fermium was named after Enrico Fermi, an Italian physicist who made significant contributions to the development of nuclear energy and the atomic bomb.