To convey is love of numbers themselves or a strong affinity for mathematics, some choose the mathematical constant pi, the number that describes the ratio between the circumference and diameter of a circle.
Pi goes on infinitely without repeating, but it can be represented by its first few digits, beginning with 3.14159. The number of digits to represent is up to the wearer.
Single- and double-digit tattoos might mean a person’s lucky number; seven is a popular lucky number digit. The Bible associates the number seven with perfection and holiness, while the number six is associated with incompleteness and evil.
In some cultures, the number 13 is considered lucky, although the Anglo-American culture tends to consider it bad luck. Some people get tattoos of their unlucky numbers to remind them to face their fears.
Tattoos of the number 42 might refer to Douglas Adams’ book The Hitchhiker’s Guide to the Universe, in which 42 is the “answer to the ultimate question of life, the universe, and everything.”
For baseball fans, the number 42 is usually a reference to Jackie Robinson. Many sports fans get their favorite athlete’s jersey number tattooed, perhaps in the appropriate team colors.
Michael Jordan’s fans, for example, might get the number 23 tattooed in red and black, Chicago Bulls colors.
Number tattoos don’t have to be written in standard Arabic numerals (1, 2, 3 etc.) Depending on the style and meaning you’re trying to convey, you might consider getting a number tattoo in Roman numerals (I, II, III, IV, V etc.).
Another interesting number tattoo style is to have the artist make the numbers look the numerals on a digital clock or calculator. Digital numbers are broken up into short, equal lines for a “techie,” robotic look.