Yes, the Holocaust is a historical fact. The actual number of Jews killed depends on how you compute it.\nComparing the registered Jews in Europe from register before and after the war, you get missing names that vary between 5.8 and 6.2 mil. Body counts go around 3 mil, death camp registers and on-site execution reports may account for over 5 mil deaths.\nThe exact number is unknown but most historians agree to a nunmber a little over 5 million, while revisionists say the number is exaggerate and have tone it down to what direct evidece states (around 3 mil) while Zionists bring the number around 7 mil.