π = 3.14159 26535 89793 23846 26433 …
3.14 = March 14 happens to be pi-day every year. Curiously enough, it also happens to be Einstein’s birthday!
http://www.angio.net/pi/bigpi.cgi gives you a search engine to search for digits of π. For example, a search for 15081947 gives
“The string 15081947 occurs at position 604,341 counting from the first digit after the decimal point. The 3. is not counted.
The string and surrounding digits:
99538905839657483550 15081947 01003364946075415680″
If you are quite crazy about π, you might want to pick up this geeky T-shirt (I created something very similar on photoshop, yet to print it!) from thinkgeek.
Indeed an enigmatic constant!