One quadrillion digits of pi

[Tsz Wo Sze]

Quoted from http://gmplib.org/pi-with-gmp.html
"...  A planned future version of GMP will allow the patient and wealthy to 
compute up to at least 1 quadrillion (1015) digits, and unlike current GMP, this 
future GMP will operate fine with operands on disk. You'll need around 4000 
high-end swap disks in order to compute 1 quintillion digits, but surely that 
will qualify you for a discount ("buy 4000, pay for 3999")."

Do you really have such plan?  I might be wrong but I think that there is a gap 
between the current (hardware) technology and being able to compute 1 
quadrillion (1015) digits of pi.  For 1 quintillion digits, it sounds impossible 
to me unless there are new major breakthroughs on either hardware or algorithms.

(self-advisement)
BTW, do you know what value is the two quadrillionth bit of Pi?
See http://arxiv.org/abs/1008.3171

Enjoy!
Tsz-Wo