How to generate account number?

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Requirements for `account number` generator:

1. Issue pseudo random consistent number (must be unique for dozen millions of records)
2. Easy check validity (without a need to make a database call)

Interested? Read more here:

http://mindref.blogspot.com/2012/11/generate-account-number.html

Comments or suggestions are welcome.

Thanks.

Andriy Kornatskyy

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How to generate account number? Andriy Kornatskyy <andriy.kornatskyy@live.com> - 2012-11-03 00:13 +0300
  Re: How to generate account number? GangGreene <GangGreene@example.com> - 2012-11-02 18:02 -0400
    RE: How to generate account number? Andriy Kornatskyy <andriy.kornatskyy@live.com> - 2012-11-03 11:38 +0300
      Re: How to generate account number? Roy Smith <roy@panix.com> - 2012-11-03 09:22 -0400
        Re: How to generate account number? Tim Chase <python.list@tim.thechases.com> - 2012-11-03 10:34 -0500
        RE: How to generate account number? Andriy Kornatskyy <andriy.kornatskyy@live.com> - 2012-11-03 19:18 +0300
        RE: How to generate account number? Andriy Kornatskyy <andriy.kornatskyy@live.com> - 2012-11-03 19:23 +0300
  Re: How to generate account number? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-11-02 22:39 +0000
    RE: How to generate account number? Andriy Kornatskyy <andriy.kornatskyy@live.com> - 2012-11-03 11:42 +0300

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