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.
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2007-03-09 05:28 JabberWok 320×240× (13504 bytes) 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 is not usua
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{{Information |Description={{en|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