384 (three hundred
ndeighty-four) is the
natural number
In mathematics, the natural numbers are those numbers used for counting (as in "there are ''six'' coins on the table") and ordering (as in "this is the ''third'' largest city in the country").
Numbers used for counting are called ''cardinal ...
following
383 383 most commonly refers to:
* 383 (number)
* AD 383, a year
* 383 BC, a year
383 may also refer to:
Astronomy
* 383 Janina, a Themistian asteroid
* Abell 383, a galaxy cluster
* HOPS 383, a class 0 protostar
* NGC 383, a double radio galaxy
...
and preceding
385. It is an even composite positive integer.
In mathematics
384 is:
* the sum of a
twin prime
A twin prime is a prime number that is either 2 less or 2 more than another prime number—for example, either member of the twin prime pair (41, 43). In other words, a twin prime is a prime that has a prime gap of two. Sometimes the term ''twin p ...
pair (191 + 193).
* the sum of six consecutive primes (53 + 59 + 61 + 67 + 71 + 73).
* the order of the
hyperoctahedral group
In mathematics, a hyperoctahedral group is an important type of group that can be realized as the group of symmetries of a hypercube or of a cross-polytope. It was named by Alfred Young in 1930. Groups of this type are identified by a paramete ...
for ''n'' = 4
* the
double factorial of
8.
* an
abundant number
In number theory, an abundant number or excessive number is a number for which the sum of its proper divisors is greater than the number. The integer 12 is the first abundant number. Its proper divisors are 1, 2, 3, 4 and 6 for a total of 16. Th ...
.
* the third 129-gonal number after 1,
129 and before 766 and 1275.
* a
Harshad number in bases 2, 3, 4, 5, 7, 8, 9, 13, 17, and 62 other bases.
* a
refactorable number
A refactorable number or tau number is an integer ''n'' that is divisible by the count of its divisors, or to put it algebraically, ''n'' is such that \tau(n)\mid n. The first few refactorable numbers are listed in as
: 1, 2, 8, 9, 12, 18, ...
.
Computing
Being a low multiple of a
power of two
A power of two is a number of the form where is an integer, that is, the result of exponentiation with number two as the base and integer as the exponent.
In a context where only integers are considered, is restricted to non-negativ ...
, 384 occurs often in the field of computing. For example, the digest length of the secure hash function
SHA-384
SHA-2 (Secure Hash Algorithm 2) is a set of cryptographic hash functions designed by the United States National Security Agency (NSA) and first published in 2001. They are built using the Merkle–Damgård construction, from a one-way compression ...
, the screen resolution of
Virtual Boy
The Virtual Boy is a 32-bit tabletop portable video game console developed and manufactured by Nintendo. Released in 1995, it was marketed as the first console capable of displaying stereoscopic "3D" graphics. The player uses the console like ...
is 384x
224
Year 224 (Roman numerals, CCXXIV) was a leap year starting on Thursday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Iulianus and Crispinus (or, less frequently, year 97 ...
,
MP3
MP3 (formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) is a coding format for digital audio developed largely by the Fraunhofer Society in Germany, with support from other digital scientists in the United States and elsewhere. Origin ...
Audio layer 1 encoding is 384
kibps, in
3G phones the
WAN implementation of
CDMA
Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communicatio ...
is up to 384 kbit/s.
In other fields
* The year
384 AD.
* The year
384 BC.
* The
Jewish year can be 384 days long.
* The
Thai lunar calendar
The Thai lunar calendar ( th, ปฏิทินจันทรคติ, , , literally, ''Specific days according to lunar norms''), or Tai calendar, is a lunisolar Buddhist calendar. It is used for calculating lunar-regulated holy days. Based o ...
can be 384 days long.
* 384 is the
ISO 3166-1 numeric
ISO 3166-1 numeric (or numeric-3) codes are three-digit country codes defined in ISO 3166-1, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), to represent countries, dependent territories, and sp ...
code for
Côte d'Ivoire.
* Asteroid
384 Burdigala
Burdigala (minor planet designation: 384 Burdigala) is a typical Main belt asteroid. It was discovered by F. Courty on 11 February 1894 in Bordeaux. It was the first of his two asteroid discoveries. The other was 387 Aquitania. Burdigala is the ...
.
* The number of lines in the
I Ching (64x6).
*
Interstate 384
Interstate 384 (I-384) is an auxiliary Interstate Highway located entirely within the state of Connecticut. It runs east to west, going from I-84 and I-291 in East Hartford to US Route 6 (US 6) and US 44 in Bolton.
Route ...
in the
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...
.
*
USS ''Parche'' (SS-384) was a US submarine in the
20th century
* The apogee of the
expeditions to the International Space Station
Exploration refers to the historical practice of discovering remote lands. It is studied by geographers and historians.
Two major eras of exploration occurred in human history: one of convergence, and one of divergence. The first, covering most ...
is generally 384 km.
References
External links
{{Commons category
Integers