Sadly my first millipede has passed on now; I bought Eratosthenes from the Yeovil Bug Fest back in Feburary 2010. I'd had him for around a year and a half but I of course had no idea of how old he actually was to begin with. From seeing how slowly babies grow in a year I can only imagine he was actually a lot older than I originally presumed.
So farewell Eratosthenes, you helped expand my love of millipedes and you were my first Archispirostreptus gigas and I hope you enjoyed living in my variety of tanks. I would have liked for him to live longer than he did but who knows how old he actually was.