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.
David Burns & David McGill - 3666 & 3667
Seana Bhraigh - 16 September 2006
David McGill (3667) on the left and David Burns (3666), the morning after a night time arrival on Seana Bhraigh. The final munro was climbed within a self-imposed deadline of 'before we are 40', in David Burns's case, with only a few days to spare