384 (number)

Three hundred [and] eighty four is an even composite positive integer.

Numbers_300-400
Ordinal	384th
Cardinal	Three hundred [and] eighty four
Factorization	$2^7 \cdot 3$
Roman numeral	CCCLXXXIV
Binary	110000000
Hexadecimal	180

In mathematics

The prime factors of 384 are 2 (seven times) and 3. 384 is

• the sum of a twin prime (191 + 193).
• the sum of six consecutive primes (53 + 59 + 61 + 67 + 71 + 73).
• the sum of two consecutive powers of two (128 + 256).
• the order of the hyperoctahedral group for n = 4
• the double factorial of 8.
• the number of Jain squares (because it is 4!*16).
• an abundant number.
• the third 129-agonal number after 1, 129 and before 766 and 1275.

Computing

Being a low multiple of a power of two, 384 occurs often in the field of computing. For example the digest length of the secure hash function SHA-384, the screen resolution of Virtual Boy is 384x224, MP3 Audio layer 1 encoding is 384 kibps, in 3G phones the WAN implementation of CDMA 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 can be 384 days long.
• 384 is the ISO 3166-1 numeric code for Côte d'Ivoire.
• Asteroid 384 Burdigala.
• The number of lines in the I Ching (64x6).
• Interstate 384 in the United States.
• USS Parche (SS-384) was a US submarine in the 20th century
• The apogee of the expeditions to the International Space Station is generally 384 km.

External links

• http://www.positiveintegers.org/384
• http://www.virtuescience.com/384.html