1-11 is a numeric symbol used by the Aryan Knights, an Idaho-based prison gang, to identify themselves. Substituting letters for numbers, 1 and 11 mean A and K, i.e., Aryan Knights.

The number 12 is a numeric symbol for Aryan Brotherhood groups (as are the numbers 1 and 2 separately), especially the Aryan Brotherhood of Texas. Substituting letters for numbers, 12 equals AB, i.e., Aryan Brotherhood.

The number 13 is a numeric symbol for the Aryan Circle, the large Texas-based racist prison gang. Substituting letters for numbers, 1 and 3 equals A and C, i.e., AC or Aryan Circle.

The number combination 14/23 is a numeric symbol associated with the Southern Brotherhood, the largest white supremacist prison gang in Alabama. The 14 is a reference to the white supremacist "14 Words" slogan ("We must secure the existence of our people and a future for white children"), while the 23 refers to the "23 precepts," a list of rules that Southern Brotherhood members must follow, such as "do not make a debt you cannot pay" and "no huffing lacquer." Additional Images:

Members of the Unforgiven, a Florida-based racist prison gang, use the numeric symbol 21-2-12 as a sort of slogan. Substituting letters for numbers, 21 stands for U ("Unity"), 2 stands for B ("Brotherhood") and 12 stands for L ("Loyalty"). Additional Images:

ALTERNATE NAMES: Aryan Alliance, Brotherhood of Aryan AllianceGroup Status: Active The 211 Crew is a large racist prison gang based in Colorado. Its main tattoo (or "shield" or "patch") is a complex triangular symbol made out of interlocking arms, with hands grasping lightning bolts and the number 211 in the center.  According to law enforcement, the name of the gang originated from the California penal code for robbery.  However, members claim that 211 is a numeric code for BAA,…

The number 511 is a numeric symbol for the Oregon-based racist prison gang European Kindred. Substituting letters for numbers, the 5 and 11 equate to E and K, i.e., European Kindred. Additional Images:

The number 737 is a numeric symbol used by Public Enemy Number 1 (PENI), a California-based white supremacist gang present on California's streets and in its prisons. Unlike most white supremacist numeric symbols, 737 is not an example of number-letter substitution. Instead, the numbers 737 correspond to the letters P, D, and S on a telephone keypad. The initials PDS stand for Peni Death Squad, another name for the group. Additional Images:

Group Status: Active The Alabama Aryan Brotherhood is one of many racist prison gangs that have adopted the Aryan Brotherhood name. It is an independent gang and has no connection to the "original" Aryan Brotherhood present in the California and federal prison systems. The primary Alabama Aryan Brotherhood tattoo or "patch" is in the popular "shield" format and consists of a shield-like emblem sporting four images, which could include the initials AB, SS lightning bolts, a swastika, an…