211 (number)
Natural number
From Wikipedia, the free encyclopedia
211 (two hundred [and] eleven) is the natural number following 210 and preceding 212. It is also a prime number.
| ||||
|---|---|---|---|---|
| Cardinal | two hundred eleven | |||
| Ordinal | 211th (two hundred eleventh) | |||
| Factorization | prime | |||
| Prime | 47th | |||
| Divisors | 1, 211 | |||
| Greek numeral | ΣΙΑ´ | |||
| Roman numeral | CCXI, ccxi | |||
| Binary | 110100112 | |||
| Ternary | 212113 | |||
| Senary | 5516 | |||
| Octal | 3238 | |||
| Duodecimal | 15712 | |||
| Hexadecimal | D316 | |||
In mathematics
- 211 is the sum of three consecutive primes (), a Chen prime,[1] a centered decagonal prime[2], and a self prime.[3]
- 211 is the smallest prime separated by 12 from the nearest primes (199 and 223). It is thus a balanced prime[4] and an isolated prime.[5]
- 211 is a repdigit in tetradecimal (111).
- 211 is the 47th prime number and therefore it is a super-prime.[6]
- 211 is the fourth Euclid number, being .[7]
In other fields
- 211 is also a nickname for Steel Reserve, a malt liquor alcoholic beverage.[8]
- 211 is also the country code for South Sudan.[9]
- 211 is also SMTP status code for system status.[10]
