for example 777 Aleister Crowley , 888 christ conscience ,33 free mansons the possibilities are endless ,666 the beast / man i just view a show on tv recently speaking of the subject of gangs and it spoke that numbers were used to replace the initials of the gangs name .
the number 6 number of the folks nation ,6 pointed star one pointed to heaven one pointed two hell all six points mean something love life loyalty wisdom knowledge and understanding
http://www.gangsorus.com/numbers.html
Symbols and Numbers: Gangs members will wear or use certain
numbers and symbols that represent their gang, set, or clique. Symbols include stars, pitchforks, Playboy bunnies, crowns, and three dots in a triangle. Common numbers used include 5, 13, 14, and 74. Numbers may represent letters of the alphabet (b=2, c=3). Local sets may use their area code to communicate their home. Gang members will tattoo these symbols and numbers, or even the name of their gang.
i hope this helps