A page of the Numeropedia - the Special Encyclopedia of Numbers
Back to [Numbers 250-259]
[EECS] The number of possible values that can be stored in a byte (8 bits); 256 = 28.
[Library] ISBN-0-262 is the International Standard Book Number for books published by Richard D. Irwin, Inc.
[Math.] A number powered by itself: 44 = 256.
[Math.] Two fourth powers using the same digits: 44 = 256 and 54 = 625.
[Measure] The number of drams in a pound.
British imperial units for weight measures: 1 stone = 14 lb (pounds) = 224 oz (ounces) = 3584 drams = 98,000 grains = 6350.29318 g (grams) & 1 grain = 64.79891 mg (milligrams) & 1 ounce = 16 drams = 437.5 grains & 1 dram = 2711/32 grains.
[Measure] The number of fluid drams in a quart.
U.S. customary units for liquid measures: 1 gallon = 4 quarts = 8 pints = 32 gills = 128 fluid ounces = 1024 fluid drams = 61440 minims = 3.785411784 liters = 231 inch3.
[Phone] International telephone dialing code for Uganda.
[Science] Sedimentary units of rock:
The size of clay unit is less than 1/256 mm.
The size of silt unit is from 1/256 to 1/16 mm.
The size of very fine sand is from 1/16 to 1/8 mm.
The size of fine sand is from 1/8 to ¼ mm.
The size of medium sand is from ¼ to ½ mm.
The size of coarse sand is from ½ to 1 mm.
The size of very coarse sand is from 1 to 2 mm.
The size of granule is from 2 to 4 mm.
The size of pebble is from 4 to 64 mm.
The size of cobble is from 64 to 256 mm.
The size of boulder is greater than 256 mm.
[Tech.] The AES (Advanced Encryption Standard) algorithm uses 128, 192- and 256-bit keys to encrypt/decrypt 128-bit plaintext/ciphertext in banking funds transfer security, replacing the DES (Data Encryption Algorithm), after the year 2000.
[Tech.] The hash functions recommended/approved by NIST to replace SHA-1, which outputs 160 bits hash: SHA-512, SHA-384, SHA-256 and SHA-224. All 3-digit number indicates the number of output bits.
[Tech.] The standard maximum number of bits using in a RFID (Radio Frequency Identity) tag, while that for a “smart RFID tag” is 256 bits.