The book is now available! 281
(just those submitted by Poo Sung)
Prime Curios!
Curios: Curios Search:


Just showing those entries submitted by 'Poo Sung': (Click here to show all)

+ 281 is the sum of consecutive primes up to 43. If we add consecutive primes up to 281, it too is prime (7699). Note that there are no other such primes with this behavior between 281 and 7699. [Poo Sung]

Prime Curios! © 2000-2018 (all rights reserved)  privacy statement