Pi Definition and 504 Threads

How many decimals of Pi do you people remember by heart. I started learning them not so long ago and so far i got: 3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510 58209 74944 59230 78164 06286 20899 86280 34825 34211 70679 82148 08651 32823 06647 09384 46095 50582 23172 53594...

I heard there is a certain way to find a certain digit of Pi without knowing the digits before it. Now i tried to make a search on it, and i got some pages, but frankly couldn't understand anything in them ! So i would appreciate if someone could explain to me in a simple way how to figure out...

I was looking at the number Pi yesterday, with its odd sequance of digits, and an plausible idea popped into my head: could any possible sequance of digits be found as a substring of the string of digits that make up pi? (sure seems so)

Some people try to memorize the digits of Pi, but why do they do it ? They say that first of all some day you may use all those digits, and secondly it helps you train your memory. I tried, i memorized the first 120 digits, then i got bored ! So, do you people think that memorizing some...