Department of Mathematics, Aristotle University of Thessaloniki, Thessaloniki, Greece;
School of Electrical and Computer Engineering, National Technical University of Athens, Athens, Greece;
School of the Faculty of Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece;
Department of Mechanical Engineering and Aeronautics, Faculty of Engineering, University of Patras, Patra, Greece;
Perfect Numbers; Odd Perfect Numbers; Fermat’s Last Theorem; Generalization of the Fermat’s Last Theorem; Prime Number Problems; Millennium Problems;