The book is now available! 13
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share
Single Curio View:   (Seek other curios for this number)

 

The only prime subscript of a triangular number that is also a square pyramidal number : 1 + 2 + 3 + ... + 11 + 12 + 13 = 12 + 22 + 32 + 42 + 52 + 62. [Beedassy]

 

  Submitted: 2008-10-18 17:11:48;   Last Modified: 2008-10-18 18:38:01.



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