In 2007, E. Witten suggested that AdS/CFT correspondence yields a duality between pure quantum gravity in (2+1)-dimensional anti de Sitter space and extremal holomorphic CFTs. E.Witten found in the low-mass regime, there is a small quantum correction to the entropy, e.g., the lowest energy primary fields yield ln(196883) ˜12.19, while the Bekenstein Hawking estimate gives 4π ˜12.57. In this work we show how this conjecture is probably correct, calculating in a theoretical-heuristic way this entropy that, indeed, match with that conjectured by E.Witten, is correct and its relationship with the monster group. This relationship is revealed by the last two equations that we present whose probability of being coincidental, we honestly think is zero
