Lemma, Mulatu, Agegnehu Atena, Samuel Dolo, Wondimu Tekalign, and Tilahun Muche. “Our Brief Journey With Fermat Numbers”. GPH-International Journal of Mathematics 4, no. 06 (June 13, 2021): 17-22. Accessed September 17, 2025. https://www.gphjournal.org/index.php/m/article/view/431.