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The aim of this work is to estimate exponential sums of the form $∑_{n≤x} Λ(n) exp(2iπ(f(n)+β n))$, where Λ denotes von Mangoldt's function, f a digital function, and β ∈ ℝ a parameter. This result can be interpreted as a Prime Number Theorem for rotations (i.e. a Vinogradov type theorem) twisted by digital functions.
Laboratoire de Mathématiques, Pures et Appliquées Joseph Liouville, Centre Universitaire de la Mi-Voix, Maison de la Recherche Blaise Pascal, 50 rue F. Buisson, B.P. 699, 62228 Calais Cedex, France