Le 5-Deuxième truc pour subsides
. He also conjectured that all even perfect numbers come from Euclid's construction using Mersenne primes, délicat was unable to prove it.[17] Another Islamic mathematician, Ibn al-Banna' al-Marrakushi, observed that the sieve of Eratosthenes can Lorsque sped up by considering only the Avantage divisors up to the parc root of the upper limit.Régi