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%I #11 Jan 24 2020 10:52:27
%S 2357,23531,23537,23561,23567,235181,235199,235211,235241,235307,
%T 235337,235349,235397,235439,235523,235541,235577,235601,235607,
%U 235661,235673,235751,235787,235811,235877,235919,235967,235997,2351033,2351171
%N Primes that are a concatenation of 2, 3, 5 and a prime.
%H Daniel Starodubtsev, <a href="/A101251/b101251.txt">Table of n, a(n) for n = 1..10000</a>
%H Peter Alfeld, <a href="http://www.math.utah.edu/~alfeld/math/p10000.html">The 10,000 smallest prime numbers</a>.
%e 2357 is a prime of order four since it is concatenated from the primes 2,3,5 and 7.
%t Select[ Table[ FromDigits[ Flatten[ IntegerDigits /@ {2, 3, 5, Prime[n]}]], {n, 200}], PrimeQ[ # ] &] (* _Robert G. Wilson v_, Dec 20 2004 *)
%Y Cf. A101218, A101219, A101249, A101250, A101252.
%K nonn,easy,base
%O 1,1
%A _Parthasarathy Nambi_, Dec 16 2004
%E Extended by _Ray Chandler_ and _Robert G. Wilson v_, Dec 22 2004
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