Those who complete (compleat!) the Munros can record this fact and receive the magic number by writing in to The Clerk of The List (See here). Additionally, a list of current compleaters is published annually in the SMC Journal.
Schiehallion, 28 October 2007
John writes: I am the taller figure nearer the summit cairn, the other figure is my son with whom I have done many of the more remote Munros. It has taken me 52 years to compleat them all!