+A repunit is a [natural number](/wiki/Natural_number) composed solely of the digit 1. These unique integers, such as 11 or 111, hold intrigue in [number theory](/wiki/Number_theory) for their intriguing properties and prime factorizations.
+## See also
+- [Prime Number](/wiki/Prime_Number)
+- [Integer](/wiki/Integer)
+- [Factorization](/wiki/Factorization)