Dr. Martin Nowak, in an eye surgeon from Michelfeld, Germany. He is credited with discovery of the 42nd known Mersenne prime.
Dr. Nowak first read about GIMPS distributed computing project in newspaper Frankfurter Allgemeine in 1999. As one of Dr. Nowak's hobbies was mathematics, the project seemed like a natural fit. He started with one personal computer in April 1999. As his eye center has grown so has his GIMPS participation and he had 24 computers contributing to GIMPS at the time of discovery.