Here is a compilation of 15 in different bases starting from Unary to Aperial (Including decimal and other bases!) CURSE YOU ULTRA NARWHAL.
@RomuloSCT12345: Unary, Quattordecimal @RodolfoYT12345: Binary - Hexadecimal @abz7: Hendecimal, Old Decimal @TheReturnofAT: Tridecimal @Custo1234: Old Quattordecimal @BaseBands: terbij4, bas3, 100=54, bas(3+6)×4 @NathantheBOOT. Compressed bas2, Bijective bas10