d1×60

d1x60 refers to a specific type of dice used in tabletop role-playing games and other dice-based systems. The notation "d1" signifies a single die, and "x60" indicates that this die has 60 faces. Therefore, a d1x60 is a 60-sided die. These dice are typically manufactured in the shape of a rhombic triacontahedron, a polyhedron with 30 faces, where each face is a rhombus. However, for a 60-sided die, a different geometric shape is used, often a modified or elongated form to accommodate the necessary number of faces.

The purpose of a d1x60 is to generate a random number between 1 and 60, inclusive. This level of granularity is useful in games where a wide range of outcomes is desired. For instance, it might be used to determine the success or failure of an extremely unlikely event, to select from a large list of random possibilities, or to measure the precise duration of a magical effect. Compared to more common dice like the d20 (20-sided) or d100 (often represented by two d10s), the d1x60 offers a much finer degree of statistical distribution. The probability of rolling any specific number on a fair d1x60 is 1/60. These dice are less common than standard polyhedral dice but are available from specialty dice manufacturers.