In Italy, the number 17 has a reputation for bringing bad luck, especially in the form of Friday the 17th, and this reputation comes from a Latin letter game rather than a law of nature. Written in Roman numerals, XVII, 17 is an anagram of VIXI, from the Latin "I have lived," which in Roman funerary language actually meant "I am dead": a formula often found on tombs (source: Geopop). People who decide to get a 17 tattoo today almost always do so for personal or ironic reasons, or as a way of turning superstition on its head—as a way of taking a position on superstition rather than predicting that something will actually happen.
- Its origin is linguistic, not magical. Italy's fear of 17 comes from the XVII-VIXI anagram and was reinforced over time by other historical references, such as the Roman legions destroyed at Teutoburg.
- It is a local belief, not a universal one. In English-speaking countries, Friday the 13th is the feared day, and in some religious traditions 17 even has a positive meaning.
- The format you choose changes the tattoo's tone. The Arabic numeral "17" communicates something more directly, while the Roman numeral "XVII" explicitly evokes the historical anecdote.
- You can try it out before deciding. A temporary or semi-permanent design lets you assess the number's size and placement on your skin before making any permanent choice.
Why the number 17 is considered unlucky in Italy
Italian wariness of 17 is not an isolated superstition: it rests on several layers that have accumulated over time, from an ancient word game to historical events that reinforced the idea that it is a number to avoid. Understanding these layers helps you see 17 as a cultural phenomenon with a specific history, rather than as a mysterious rule with no explanation.
The XVII-VIXI anagram
The starting point is linguistic. In Roman numerals, 17 is written XVII, and rearranging those same four letters gives you VIXI, from the Latin verb "to live." In the context of Roman funerary inscriptions, "vixi" indicated that a person's life had ended, so it was equivalent to saying "I am dead" (source: Geopop). This double meaning of "I have lived" and "I am dead" is the element most often cited to explain why 17, and not another number, became Italy's symbol of bad luck.
The Roman legions and the Pythagoreans
A broader historical interpretation is also part of the story. After the defeat at the Battle of the Teutoburg Forest, the legions numbered 17, 18 and 19, wiped out in the battle, were never assigned to new Roman units: the numbers themselves came to be considered unlucky (source: Wikipedia, Eptacaidecafobia). According to a tradition traced back to the Pythagoreans, the position of 17 in the number sequence also contributed to its being viewed with suspicion: the number falls exactly between 16 and 18, both considered "perfect" because they correspond to the sides of two regular rectangles, 4x4 and 3x6. This should be understood as a historical and philosophical tradition passed down through the centuries, not as a mathematical fact that makes 17 objectively different from other numbers.
Friday the 17th, not Friday the 13th: a distinctly Italian superstition
The specific form this belief takes in Italy is a good indication of how cultural, rather than universal, it is. In many English-speaking countries, Friday the 13th is the truly feared day: it appears in films, jokes and everyday habits. In Italy, by contrast, Friday the 17th plays the equivalent role, a direct heir to the history of the anagram we have just explored (source: Geopop).
This belief shows up more in practical habits than in rules written down anywhere: some hotels avoid numbering a room or floor 17, and some airlines skip that number in their seat rows. These are commercial choices intended not to offend the sensibilities of people who believe in the superstition, not indications that the number carries any real risk.
In other cultures, 17 is not frightening, and in some it is a positive number
Outside Italy, the picture changes considerably. Where Friday the 13th is the feared day, 17 remains a number like any other, without the symbolic weight it carries on Italy's cultural skin: nobody checks hotel room numbers for that reason, and nobody avoids the number on plane tickets.
In some traditions, 17 even has an interpretation opposite to the Italian one. In Jewish numerology, which is based on the numerical value of letters (gematria), the word "tov," meaning "good" or "goodness," corresponds exactly to the number 17 (source: Chabad.org). This association belongs to a specific religious and cultural framework, not to a fact that applies everywhere, but it clearly shows how the same number can carry diametrically opposed meanings depending on who interprets it.
How the 17 tattoo is reinterpreted today
People who choose to get a 17 tattoo today rarely do so out of literal superstition, in the sense of expecting the number to bring or take away good luck. More often, it is a personal gesture: a way to make fun of superstition, to claim a number that is tied to their own story for some reason (a date, an age, a memory) despite its reputation, or simply to wear a symbol that prompts an immediate reaction in anyone who recognizes it in Italy.
The first design decision is the format. The Arabic numeral "17" is more immediate and less tied to the historical anecdote: it works like any personal number. The Roman numeral "XVII," on the other hand, directly evokes the story of the VIXI anagram, and anyone who recognizes it immediately places the tattoo in the context of Italian superstition. Neither choice is more "correct" than the other: they simply change the tone and the level of historical reference you want to convey.
In practical terms, a standalone number like 17 or a short inscription like "XVII" works well in small, clean formats, in the style InkLabs calls fine line or minimal: thin strokes, little space taken up, and good legibility even at a small size. If you prefer to pair the number with a word or short phrase, you can find useful ideas in the article on quote and word tattoos, created for people who want to write a personal message on their skin rather than rely on a standalone symbol.
Try the placement and size before getting a permanent tattoo
A number with as much cultural significance as 17 deserves the same cautious approach as any other important design: try it first on a medium that can be adjusted or removed. A temporary or semi-permanent design lets you see how the numeral or Roman numerals actually look on your body, where they are visible throughout the day, and how much space they take up in relation to the rest of your skin, before committing to something permanent.
It is important to be clear about what this trial can and cannot tell you. A temporary or semi-permanent tattoo shows the design's size, placement and general appearance on the skin; it does not predict the pain, the healing process, a possible allergic reaction or exactly how the same design would look if done permanently, because the technique, inks and healing times are different. For anyone new to this kind of trial, the guide to why you should test a tattoo before making it permanent and the guide to choosing the right design and placement for your first tattoo explain in detail how to approach this stage, including the aspects a test design can actually help you evaluate.
It is also worth looking at examples already in the catalog to see how small designs with a single word or short symbol work. The Infinite design combines the infinity symbol with short phrases like "make a wish" or "magic," drawn with simple lines: it is a useful example of how a pared-back graphic element can work alongside a small personal text, the same balance needed if you want to pair "17" or "XVII" with another word or leave it on its own.
To decide how small or visible to make your own 17, the guide to temporary tattoo sizes compares mini, medium and full-body formats and helps you understand which scale best suits your chosen body placement. If you are curious about the number, whether as a nod to superstition or simply as a personal gesture, you can first try the numeral or Roman numerals as a temporary or semi-permanent design in the Temporary Lettering Tattoos collection, to see the size and placement on your own skin before considering something permanent.
