


Cardinal  one  
Ordinal  100th (one hundredth) 

Factorization  2^{2}× 5^{2}  
Divisors  1, 2, 4, 5, 10, 20, 25, 50, 100  
Roman numeral  C  
Unicode symbol(s)  C, ⅽ  
Binary  1100100_{2}  
Ternary  10201_{3}  
Quaternary  1210_{4}  
Quinary  400_{5}  
Senary  244_{6}  
Octal  144_{8}  
Duodecimal  84_{12}  
Hexadecimal  64_{16}  
Vigesimal  50_{20}  
Base 36  2S_{36}  
Greek numeral  ρ  
Arabic  ١٠٠  
Bengali  ১০০  
Chinese numeral  佰,百  
Devanagari  १००  
Hebrew  ק (Kuf)  
Khmer  ១០០  
Korean  백  
Tamil  ௱, க00  
Thai  ร้อย, ๑๐๐ 
100 or one hundred (Roman numeral: Ⅽ) is the natural number following 99 and preceding 101.
In medieval contexts, it may be described as the short hundred or five score in order to differentiate the English and Germanic use of "hundred" to describe the long hundred of six score or 120.
100 is the square of 10 (in scientific notation it is written as 10^{2}). The standard SI prefix for a hundred is "hecto".
100 is the basis of percentages (per cent meaning "per hundred" in Latin), with 100% being a full amount.
100 is the sum of the first nine prime numbers, as well as the sum of some pairs of prime numbers e.g., 3 + 97, 11 + 89, 17 + 83, 29 + 71, 41 + 59, and 47 + 53.
100 is the sum of the cubes of the first four integers (100 = 1^{3} + 2^{3} + 3^{3} + 4^{3}). This is related by Nicomachus's theorem to the fact that 100 also equals the square of the sum of the first four integers: 100 = 10^{2} = (1 + 2 + 3 + 4)^{2}.
2^{6} + 6^{2} = 100, thus 100 is a Leyland number.
100 is an 18gonal number. It is divisible by the number of primes below it, 25 in this case. It can not be expressed as the difference between any integer and the total of coprimes below it, making it a noncototient. It can be expressed as a sum of some of its divisors, making it a semiperfect number.