The book is now available! 1123
(just those submitted by Kik)
Prime Curios!
Curios: Curios Search:


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

+ 11/23 (November 23) is the only date containing the concatenation of two 2-digit primes that can be read as a prime number in either "month-day" or "day-month" format, i.e., 11/23 or 23/11. Note that Kinro Kansha no Hi (Labor-Thanksgiving Day) occurs on this date in Japan. [Kik]

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