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:
-top row of the picture- with the following colors regarding the numbers:
0 = Dark Cyan,
-1 = Dark Orange,
+1 = Light Orange,
-2 = Dark Green,
+2 = Light Green,
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 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).