Lucky number

The phrase names an attachment rather than a property. A lucky number is a number somebody treats as favourable to them, and nothing in the wording asserts anything about how the world behaves. That is why two people can hold flatly incompatible lucky numbers without either of them being wrong, and why a lucky number can be reported but never checked.

Usage splits two ways. The personal kind is autobiographical: a birth date, an anniversary, a house number, the number on a shirt somebody wore for years. It takes its standing from the memory attached, which is why one person's 17 means nothing at all to anyone else. The cultural kind is shared and usually traceable to a reason. Eight is favoured across Chinese-speaking regions because the sound of 八 ba resembles 發 fa, to prosper, and the 2008 Beijing Olympics opened on 8 August at eight in the evening. Seven holds the equivalent place across much of the West, resting on how often it recurs in religious and folk material rather than on any wordplay.

A numerology number is a different object with a similar surface, and the two get conflated constantly. A Life Path or an Expression is derived: a stated procedure turns a birth date or a name into a digit, so the same input always gives the same output and the working can be checked line by line. A lucky number is adopted, and there is no procedure behind it to check. Whether either kind does anything is taken up in our guides on finding a lucky number and on whether lucky numbers are real. The short answer is that no number is more likely to be drawn than any other in a fair draw.