The book is now available! 61
(just those submitted by Silva)
Prime Curios!
Curios: Curios Search:

GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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

+ The first of five consecutive primes that can be arranged in a 3-by-3 square whose columns and rows sum to consecutive primes (199, 211, 223):
   61  67  71 

   67  71  73 

   71  73  79.

+ The smallest prime of order n that divides the sum of the first n composite numbers. [Silva]

Prime Curios! © 2000-2020 (all rights reserved)  privacy statement