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Original file ‎(750 × 752 pixels, file size: 462 KB, MIME type: image/jpeg)

Summary

Description
English: Ulam spiral to 150 iterations
Français : La spirale d'Ulam de 150 itérations
Date
Source Own work
Author Généré avec la librairie GD de PHP, par Cortexd

Licensing

Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
In some countries this may not be legally possible; if so:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Captions

Ulam spiral with prime numbers (red dots) and number of divisors (blue dots).

Items portrayed in this file

depicts

number theory

copyright status

copyrighted, dedicated to the public domain by copyright holder

copyright license

released into the public domain by the copyright holder

inception

22 February 2005

source of file

original creation by uploader

File history

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Date/TimeThumbnailDimensionsUserComment
current03:33, 30 August 2007Thumbnail for version as of 03:33, 30 August 2007750 × 752 (462 KB)Aydolen{{Information |Description=Spirale d'Ulam de 150 itérations |Date=22 février 2005 |Author=Généré avec la librairie GD de PHP, par Cortexd }}
03:29, 30 August 2007Thumbnail for version as of 03:29, 30 August 2007750 × 752 (313 KB)Aydolen{{Information |Description=Spirale d'Ulam de 150 itérations |Date=22 février 2005 |Author=Généré avec la librairie GD de PHP, par Cortexd }}
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source: https://en.wikipedia.org/wiki/File:Spirale_Ulam_150.jpg

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