211 (number)

211 (two hundred [and] eleven) is the natural number following 210 and preceding 212. It is also a prime number.

In mathematics

• 211 is the sum of three consecutive primes (<math>67+71+73</math>), a Chen prime, a centered decagonal prime, and a self prime.
• 211 is the smallest prime separated by 12 from the nearest primes (199 and 223). It is thus a balanced prime and an isolated prime.
• 211 is a repdigit in tetradecimal (111).
• 211 is the 47th prime number and therefore it is a super-prime.
• 211 is the fourth Euclid number, being <math> 2\times 3\times 5\times 7 + 1</math>.

In other fields

• 211 is also a nickname for Steel Reserve, a malt liquor alcoholic beverage.
• 211 is also the country code for South Sudan
• 211 is also SMTP status code for system status.

References

ca:Nombre 210#Nombres del 211 al 219