A Shivling that was unveiled for Shivratri 2013 in Surat in Gujarat is made
of 2020000 Rudrakshas (20 Lakh 20 Thousand). This Rudraksha Shivling is 30 feet
high and 16 feet high wide.
A Youtube video of the Shivling is embedded below
You can watch a news report about the Rudraksh Shivling hereon Yahoo India.