The book is now available! 33773
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share
+ The smallest prime p such that the numbers 21 + 31 + 51 + 71 + 111 + ... + p1, 22 + 32 + 52 + 72 + 112 + ... + p2, 23 + 33 + 53 + 73 + 113 + ... + p3, 24 + 34 + 54 + 74 + 114 + ... + p4 are prime. [Crespi de Valldaura]




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