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Primes which can be written as a concatenation of p^q and q^p where p and q are primes.
1

%I #12 Dec 22 2024 23:56:01

%S 89,125243,2187343,1331177147,15943232197,48828125161051,

%T 226981127173474825648610542883299603,

%U 45474735088646411895751953125115856201,952809757913927895430243255237372246531,1856211592101757430245316367120794931877133

%N Primes which can be written as a concatenation of p^q and q^p where p and q are primes.

%H Sean A. Irvine, <a href="/A073905/b073905.txt">Table of n, a(n) for n = 1..20</a>

%K base,nonn

%O 1,1

%A _Amarnath Murthy_, Aug 18 2002

%E a(4)-a(10) from Arkadiusz Wesolowski, Feb 08 2012