Pi is one of the first interesting numbers a scientific society will come by, due to it being a Universal Constant, and the number just keeps going.
So if you want to calculate an infinitely long number, it will take an infinite amount of time. The 5 Trillionth digit is however manageable; if you have this rig that is...
Shigeru Kondo broke the recent world record for calculation of Pi, after 90 days of dedicated work on his machine. The custom build rig cost $18,000 to make, and included some truly stunning hardware. Take a look:
Processor - 2 x Intel Xeon X5680 @ 3.33 GHz - (12 physical cores, 24 hyperthreaded)
Memory - 96 GB DDR3 @ 1066 MHz - (12 x 8 GB - 6 channels) - Samsung (M393B1K70BH1)
Motherboard - Asus Z8PE-D12
Hard Drives -
1 TB SATA II (Boot drive) - Hitachi (HDS721010CLA332)
3 x 2 TB SATA II (Store Pi Output) - Seagate (ST32000542AS)
16 x 2 TB SATA II (Computation) - Seagate (ST32000641AS)
Raid Controller - 2 x LSI MegaRaid SAS 9260-8i
Operating System - Windows Server 2008 R2 Enterprise x64
Well. I think the 96GB of RAM definitely beat my rig, not to mention the nearly 40 TB of hard drive space he has!
Even with all of this equipment, it still took him 90 days with custom software to get this far. Kondo said his mother and wife showed "no particular feelings" about his hard earned success; ouch.
The entirety of Pi takes up 6TB of space when it's this long. Many people aren't quite sure why it needs to be calculated to such a precision, when at most the first 50 digits are relevant in today's mathematics.
Are you impressed by that hardware? Don't you wish you could try it out with Crysis? Tell us your thoughts!
EDIT: Thanks to Grimreeper786 for his shout out earlier about this!