Grand Master of Memory
Grand Master of Memory (GMM) is a title previously awarded by the World Memory Sports Council to people who are able to successfully negotiate the following three memory feats: Memorise 1,400 random digits in an hour Memorise the order of 14 decks of cards in an hour Memorise the order of one deck of cards in under 40 seconds. The standards need not all be achieved at the World Memory Championships, nor do they need to be achieved at a single competition, but they must be achieved at competitions that have been officially approved and arbitrated by the World Memory Sports Council.