The book is now available! 1217
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share
+ The smallest 4-digit prime p such that the sum of the predecessor and successor primes is divisible by 29. [Russo]

+ The smallest 4-digit prime such that, if its digits are ABCD, AB+CD, and A+B+C+D, they are also each prime. [Opao]

+ The smallest emirp whose additive and multiplicative persistences both equal its prime digital root. [Beedassy]

(There are 2 curios for this number that have not yet been approved by an editor.)




Prime Curios! © 2000-2017 (all rights reserved)