Pattern
Repeating Digit Numbers
A repdigit is a number whose digits are all the same, such as 7, 77, 777 or 444444. They are among the rarest visual patterns because every digit is locked to one value.
There are only a handful of repdigits at each length — nine per digit-length (one for each non-zero digit) — so across the whole range they are extremely scarce. That scarcity is exactly what the rarity score rewards.
Repdigits belong to the repetition group. Because RNGdle.net de-duplicates related traits within a group, an all-identical number scores from its strongest repetition trait rather than stacking every overlapping one.
Landing a repdigit in the Infinite Roll simulator is a genuine event — the probability simulator can estimate how many rolls a target tier like this typically takes.