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.
Derry Cairngorm, 19 July 2008
John reports: I compleated this munro with 12 friends, some of whom have compleated and some who are close to compleation