The Philosopher's stone and Dumbledore's age

[Matt]

No: HPFGUIDX 145183

O.K. I was just re-reading PS when something hit me. In the part where 
Hermione gets the book out to show them who Flamel is, it says he's 
six hundred and sixty five years old. I mean bloody hell thats great 
with his elixer and all but then, If he and Dumbledore worked together 
on it, how old does it make him? I might be wrong about bits and 
pieces of this but still, thats gotta make him older then originally 
thought right?

Matt