Œ Notation is using numbers that are multiples of other digits being multiplied. For example, 50!Œ would be 48*42*39*36*28*26*24 (8/4, 4/2, 9/3, 6/3, 8/2, 6/2, 4/2) No numbers below 24 are used. The proper name to coin a number with this notation is called Factor Digit. Here are a few numbers I have coined with this notation.
Class 2
Factor Digit Faxul = 200!Œ