The book is now available! 97313179
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share
+ 97:31:31:79 is the longest emirp duration that along with its reversal (97:13:13:79) can both be timed on a seven-segment digital chronometer stopwatch simultaneously in emirp hours, emirp minutes, emirp seconds, and emirp hundredths of a second. [Beedassy]




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