Intervenant : Jan-Christoph Schlage-Puchta (Freiburg) "Consecutive integers with the same number of prime divisors" Date et heure : lundi 27 mars, 16h30 Résumé : It is shown that there are infinitely many integers n such that n and n+1 have the same number of prime factors. The proof uses a combination of sieve methods, elementary number theory and computer calculations.