A036342 Prime concatenated analog clock numbers read clockwise.

2, 3, 5, 7, 11, 23, 67, 89, 4567, 23456789, 23456789101112123, 891011121234567891011, 23456789101112123456789101112123, 567891011121234567891011121234567891011, 121234567891011121234567891011121234567891011121, 91011121234567891011121234567891011121234567891011121234567

Offset

1,1

Comments

The hours 10, 11 and 12 are taken 'complete and unreversed'.

Links

Sean A. Irvine, Table of n, a(n) for n = 1..25

Carlos Rivera, Puzzle 19. Primes on a clock, The Prime Puzzles & Problems Connection.

Eric Weisstein's World of Mathematics, Clock Prime

Crossrefs

Cf. A034326, A036343, A036344.

Sequence in context: A119660 A079148 A107367 * A114421 A167119 A165682

Adjacent sequences: A036339 A036340 A036341 * A036343 A036344 A036345

Keyword

nonn,base,changed

Author

Patrick De Geest, Dec 15 1998

Extensions

a(14)-a(15) from Jean-Marie Hachey, Oct 05 2016

Offset and data corrected by Sean A. Irvine, Oct 26 2020

Status

approved