A162765 - OEIS

%I #13 Jul 22 2014 22:08:58

%S 277513,379513,558913,565937,837737,850613,936713,1085113,1353137,

%T 1360613,1374413,1491013,1529513,1533313,1745813,1833613,1855013,

%U 2111513,2138813,2153737,2194613,2557213,2601913,2847413,3277513

%N Least prime of two Ormiston pairs in same century.

%C Two consecutive primes that use the same digits (rearranged) are called an Ormiston pair (see A072274).

%C The first case of three Ormiston pairs in the same century is (65150713, 65150731), (65150737, 65150773), (65150779, 65150797). The definition is unclear in such cases. The linked table includes both 65150713 and 65150737. - _Jens Kruse Andersen_, Jul 22 2014

%D Andy Edwards, Ormiston Pairs, AMT Magazine, Volume 58 Number 2, 2002, p.12-13.

%H Jens Kruse Andersen, <a href="/A162765/b162765.txt">Table of n, a(n) for n = 1..10000</a>

%H Jens Kruse Andersen, <a href="http://primerecords.dk/ormiston_tuples.htm">Ormiston Tuples</a>

%H Andy Edwards, <a href="http://www.aamt.edu.au/content/download/742/19588/file/amt-s.pdf">Ormiston Pairs</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/RearrangementPrimePair.html">Rearrangement Prime Pair</a>

%e 277513 and 277531 is first, and 277579 and 277597 is the second Ormiston pair in the 2776th century.

%Y Cf. A072274.

%K nonn,base

%O 1,1

%A _Ki Punches_, Jul 13 2009

%E Edited and extended by _Klaus Brockhaus_, Jul 22 2009