Jean François Théophile Pépin (14 May 1826 – 3 April 1904) was a French mathematician.
He was appointed Professor of Canon Law in 1873, moving to Rome in 1880.
In 1876 he found a new proof of Fermat's Last Theorem for n = 7,[1] and in 1880 he published the first general solution[2] to Frénicle de Bessy's problem He also gave his name to Pépin's test, a test of primality for Fermat numbers.
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