211 (number)

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

← 210 211 212 →
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Cardinaltwo hundred eleven
Ordinal211th
(two hundred eleventh)
Factorizationprime
Prime47th
Divisors1, 211
Greek numeralΣΙΑ´
Roman numeralCCXI
Binary110100112
Ternary212113
Quaternary31034
Quinary13215
Senary5516
Octal3238
Duodecimal15712
HexadecimalD316
VigesimalAB20
Base 365V36

In mathematics

211 is an odd number.

211 is a primorial prime, sum of three consecutive primes (67 + 71 + 73), Chen prime, centered decagonal prime, and self prime.[1]

211 is a repdigit in base 14 (111).

Multiplying its digits, it is still a prime (2), and adding its digits, it is square (4). Rearranging its digits, 211 becomes 121, which also is a square. Adding any two of its digits will be prime (2 or 3).

In other fields

2-1-1 is special abbreviated telephone number reserved in Canada and the United States as an easy-to-remember three-digit telephone number meant to provide quick information and referrals to health and human service organizations for both services from charities and from governmental agencies.

211 is also associated with E211, the preservative sodium benzoate

211 is also the California Penal Code[2] section defining robbery. Sometimes it is paired with 187, California PC section for murder.

211 is also an EDI (Electronic Data Interchange) document known as an Electronic Bill of Lading.

211 is also a nickname for Steel Reserve, a malt liquor alcoholic beverage.

211 is also SMTP status code for system status.

+211 is the code for international direct-dial phone calls to South Sudan.

gollark: Fascinating. Also really stupid.
gollark: Signed overflow definitely isn't, though.
gollark: But the C spec is weird so who knows.
gollark: I know *overflow* is.
gollark: Oh, actually, I don't know.

See also

References
  1. "Sloane's A006378 : Prime self numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
  2. Shouse California Law Group
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