The book is now available! 2423
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share
+ The 2423 Hillside Observation Passenger Car is part of the Lionel Lines set of the early to mid 1950's.

+ (24, 23, 22, 21) is the monadic case of four consecutive double-digit numbers such that concatenating them two-two in descending order, we create two primes, i.e., 2423 and 2221. [Loungrides]




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