The Proth-Gilbreath Conjecture -display of the process for the 32 first prime numbers- [La conjecture de Proth-Gilbreath -visualisation du processus pour les 32 premiers nombres premiers-].




This picture displays the process for the 32 first prime numbers:

{2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131}

-top row of the picture- with the following colors regarding the numbers:


when all other numbers -{3,4,5,6,7,8,...}- are Grey (Dark and Light Grey respectively for the negative and positive numbers).

According to the Proth-Gilbreath Conjecture, when the first prime number used (the smallest one) is 2, the left-hand side column must be Orange ('-1' or '+1') except the upper square that is Light Green ('+2', the first prime number).


See some related pictures (including this one):

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x =  
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[Plus d'informations à propos de la conjecture de Proth-Gilbreath -en français/in french-]
[More information about the Proth-Gilbreath Conjecture -in english/en anglais-]


(CMAP28 WWW site: this page was created on 11/07/2025 and last updated on 02/10/2026 18:21:35 -CET-)



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