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This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help.
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Description |
English: Every pixel here represents a number in the range 1 to 76,800. If the pixel is black, the number it represents is prime. If the pixel is white, that number is not prime.
So for example, the white pixel in the upper-left represents "1", which not prime. The next two black pixels to the right in the same row represent "2" and "3", which are prime.
For any pixel, the number it represents is given by
- number = column + (row-1)*320
where column runs from 1 to 320, and row from 1 to 240. See the list of the 100,008 primes |
Date |
2007-03-09 (original upload date) |
Source |
Transferred from en.wikipedia; transfer was stated to be made by User:Aushulz. |
Author |
Original uploader was JabberWok at en.wikipedia |
Permission ( Reusing this file) |
This image is in the public domain because it is ineligible for copyright.
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Licensing
Public domainPublic domainfalsefalse |
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This file is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship. |
File usage
The following pages on Schools Wikipedia link to this image (list may be incomplete):
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