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.

This biography of a living person relies too much on references to primary sources. (November 2017)

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.

• Zhi-Hong Sun's homepage

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