# Gavin Andresen
# 2011-02-15 19:10:42
# https://bitcointalk.org/index.php?topic=3508.msg49371#msg49371

2.1 quadrillion basic units should be plenty.  The US M2 money supply is (according to Wikipedia) less than 1 quadrillion pennies. @p{par}

If bitcoin is ever twice as popular as dollars, that would be a very good problem to have.