Sun Zhihong
Sun Zhihong (Chinese: 孙智宏; pinyin: Sūn Zhìhóng; Wade–Giles: Sun Chihhung, born October 16, 1965) is a Chinese mathematician, working primarily on number theory, combinatorics, and graph theory.
Sun and his twin brother Sun Zhiwei proved a theorem about what are now known as the Wall–Sun–Sun primes that guided the search for counterexamples to Fermat's last theorem.