The book is now available! 237
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:

+ 2^(237 - 1) + 237 is prime. [Zeisel]

+ 237 is the smallest 3-digit number with its digits being 3 distinct primes that is not prime nor any of the permutations of its digits represent a prime number. [Sladcik]

(There is one curio for this number that has not yet been approved by an editor.)

  To link to this page use /curios/page.php?number_id=777

Prime Curios! © 2000-2015 (all rights reserved)