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.
Nigel Pittman - 5063
Mount Keen - 29 July 2012
Nigel was accompanied by Gavin Kerr, who has himself subsequently completed his own round (25 August on Beinn Dorain with a rather larger party).
I see that in the year I climbed my first Munro there were only between 70-80 compleatists listed. How times change. I should have got on with them a bit quicker!