The book is now available! 133
(just those submitted by Litman)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share

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

+ 133 is the smallest positive integer, n, for which the integer 10n + 5 is divisible by both 3 and 5 and for which none of the integers 10n + 1, 10n + 3, 10n + 7, and 10n + 9 are prime. [Litman]




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