François Proth
François Proth (* 1852, † 1879) was a French amateur mathematician.
Proth was a professional farmer in Vaux- devant- Damloup at Verdun. 1876-1878 he published several theorems on prime numbers, most famously his prime test is ( set of Proth ) for Prothsche primes ( and thus also to the example of Fermat numbers ). The Pépin test is a special case of the set of Proth and was also published by Proth. Although Proth was in his publications no evidence for the set of Proth, but wrote in a letter that he had a proof. Work on Proth numbers were associated with about the same time published works by Edouard Lucas. Proth also formulated Gilbreaths presumption before the namesake Norman Gilbreath ( and gave an incorrect proof).
He claimed to have also proved Bertrand's postulate.