The book is now available! 208403
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

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

 

The sum of the squares of the first 41 semiprimes is itself a 4-brilliant number (this being the first such solution). Note that 41 is the prime reversal of the semiprime 14, that 4-brilliant means the product of 4*1 primes of the same number of digits, and that 41 is one of those primes. [Post]

 

  Submitted: 2004-10-25 18:49:43;   Last Modified: 2008-01-30 11:28:00.



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