KnowraEuclid–Euler theoremLinked fromLinked fromThe 4 pages that link to Euclid–Euler theorem, each with the reason it gives.All 4Related 4Mersenne primeRelated: It turns each Mersenne prime into an even perfect number, and classifies all such numbers.Perfect numberRelated: It gives the complete characterization of even perfect numbers.Aliquot sumRelated: It characterizes even integers whose aliquot sum equals the integer.Catalan–Mersenne conjectureRelated: It explains why Mersenne primality has mattered since ancient number theory.