Irrational Numbers Search Engine

^{= 3.14...}

Search 2,000,000,000 decimal digits of Pi, E, the Square Root of 2 and 500M digits of the Golden Ratio (Phi) for the first occurrence of a numeric string, or return 100 digits beginning from the specified starting position (excluding the first whole number digit).

Message:

Please enter a numeric string to search or a starting digit (no decimals or commas)

2 billion decimal digits of Pi, E, the Square Root of 2 and 500 million digits of Phi calculated with PiFast43.

About the Irrational Numbers Search Engine: The search engine was written a few years ago as a VB6 class (DLL) that scans text files containing 2 billion decimal digits of Pi, E, the Square Root of 2, and 500 million digits of Phi.

The application server is a Windows Server Virtual Machine running on a 2011 Mac Mini Server with a quad core i7 CPU at 2GHz and a factory installed SSD. It takes less than 20 seconds to scan the entire search file (subsequent searches of the same constant run about 25% faster due to memory cacheing). You can download the VB6 source code and executables for the Search Engine. Send me any comments, suggestions or ideas (such as implementing a faster search method eg. BCD compression!)

Links:

Pi, e, the Square Root of 2 and the Golden Ratio (Phi) on Wikipedia

10,000 decimal digits of Pi, E, SqrRt2 and Phi

PiFast written by Xavier Gourdon.

The *original* Pi Search Engine that inspired this one; much faster, but only 200m digits. Good background and statistical info.

The search engine has processed 308,224 queries since 01/09/2002

This page created on: 9/21/2009 23:20:55 - updated: 4/26/2012 09:54:18.


Constant:	Pi E Sqr Root 2 Phi (500M)
Mode:	Search Return 100 Digits