MathGroup Archive: March 2007 [00064]

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fastest way to add up a billion numbers

To: mathgroup at smc.vnet.net
Subject: [mg73880] fastest way to add up a billion numbers
From: "Raj" <rajanikanth at gmail.com>
Date: Fri, 2 Mar 2007 06:41:46 -0500 (EST)

hi!

Could somebody tell me what would be the fastest way to add up a
billion numbers(from 1 to 10^9 i.e the first billion numbers) in
Mathematica?

Ofcourse the answer is n(n+1)/2, but is there any other way in
Mathematica other than the following one:

Total@@Range[10^9]

Thanks,

Raj

Follow-Ups:
- Re: fastest way to add up a billion numbers
  - From: János <janos.lobb@yale.edu>
- Re: fastest way to add up a billion numbers
  - From: Sseziwa Mukasa <mukasa@jeol.com>
- Re: fastest way to add up a billion numbers
  - From: Andrzej Kozlowski <akoz@mimuw.edu.pl>

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