The TI-83 is a programmable graphing calculator.
Number theorist Paul Erdős lived to be 83 years old.
The number of permutations of the 10 distinct digits taken 9 at a time that are perfect squares. These range from 101242 = 102495376 to 303842 = 923187456. [Beiler]
The largest of only two double-digit primes whose cube, (571787), is the concatenation of a pair of 3-digit primes. [Trotter]
83 is the sum of the squares of the first three consecutive odd primes (32 + 52 + 72). [Gallardo]
The exact number of Johnson Solids with no hexagonal faces. [Hartley]
In W. H. Auden's famous poem, "Miss Gee" lived in Clevedon Terrace at number 83. [La Haye]
The only prime of the form p^4 + 2, where p is prime. [Firoozbakht]
The first prime in the decimal expansion of the Gauss's constant G, defined as the reciprocal of the arithmetic-geometric mean of 1 and sqrt(2). Note that G = 0.83462684167.... [Capelle]
83 is the sum of the first three primes ending with the digit one. [Sladcik]
The United States Navy ship "Pueblo" had a crew of 83 men on-board when it was seized by North Korea. [Dobb]
Find the average of all primes up to 83 and you'll get the reversal of 83.
The German mental calculator Rüdiger Gamm (1971- ) once demonstrated his ability on an Australian radio show by calculating consecutive powers of 83 in his head without making a mistake. The number 83 had been selected for him randomly.
The mean of all primes less than or equal to 83 equals the reversal of 83. [Honaker]
Vanuatu is an archipelago of 83 islands lying between New Caledonia and Fiji in the Southwest Pacific.
Total number of vertices in all finite 6-dimensional regular polytopes (7 in the 6-simplex, 64 in the 6-hypercube, 12 in the 6-hyperoctahedron). [Post]
Bismuth, number 83 on the periodic chart, is the heaviest element that is not radioactive. [Conway]
If you write all primes up to 83, then you can see nine digits 1, ..., 9. [Poo Sung]
The largest known prime number p such that 2p does not contain the prime digit 2. [Capelle]
The optimum temperature (in degrees Celsius) for preparing custards made of one egg, one cup of milk, and one tablespoon of sugar. [Beedassy]
The smallest prime exponent in the size of the free cartesian closed category over 3 objects. 3^83 is thus an upper bound on the number of left-associated formulas in Michael O'Connor's "An Interesting Puzzle in Propositional Logic." [Post]
The dot product of the vector whose components are the 4th row of Pascal's Triangle and the vector whose components are the first 5 primes in order. [Green]
The largest prime on the front cover of "Primes and Programming" by Peter J. Giblin.
Why 83 is prime.
(There are 15 curios for this number that have not yet been approved by an editor.)
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