OFFSET
1,1
COMMENTS
The hours 10, 11 and 12 are taken 'complete and unreversed'.
LINKS
Michael S. Branicky, Table of n, a(n) for n = 1..40
Carlos Rivera, Puzzle 19. Primes on a clock, The Prime Puzzles & Problems Connection.
Eric Weisstein's World of Mathematics, Clock Prime.
FORMULA
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, Dec 15 1998
EXTENSIONS
Offset corrected and a(21) from Sean A. Irvine, Oct 26 2020
a(22) and beyond from Michael S. Branicky, May 20 2024
STATUS
approved