Fibonacci base 
irrationalbase number system 
balanced ternary 
All bases are base 10 
base 1 
Base nine number system 
base 60 
Sumerian Number System 
Your radical ideas about roman numerals have already occurred to others 
The Base project 
optimal difference algorithm 
decimal to binary 
base 20 
compound addition 
Banker's cheque 
Freud's Defense Mechanisms 
bitcoin 
numbers in prose 
Convert any number to decimal 
Setun 
unary 
New York subway 

