The book is now available! 331
(another Prime Pages' Curiosity)
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+ Robert Franek wrote a book entitled The Best 331 Colleges.

+ Sound travels just over 331 meters per second in dry (0% humidity) air at zero degrees Celsius. [Necula]

+ The total population of Rives, Tennessee (the address of one of the authors), as of the 2000 census.

+

       133 331
      1333 3331
     13333 33331
    133333 333331
   1333333 3333331
  13333333 33333331
 composite and prime

+ The total number of reduced quadratic forms having one class per genus. [Noe]

+ The United States conducted 331 atmospheric nuclear bomb tests before the test ban treaty of 1962. [McCranie]

+ 331 = 11*13*17-2^2*3*5^2*7, using only the potential prime divisors (with multiplicity) up to the square root; and they use all of them. Can you find an expression for the next prime (337) in such a way? [Wood]

+ 331 is the smallest prime that is good, happy, lucky, and cuban. [Green]

+ The only known exponent n such that 83^n-82^n is a (probable) prime. [Hasler]

+ The first prime to appear in the "commas sequence".

+ The smallest prime p such that the concatenation of p and p^2 is a Cyclops number (331109561). [Gaydos]

(There are 8 curios for this number that have not yet been approved by an editor.)




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