%I #13 Jan 26 2023 18:02:21
%S 7,47,53,67,97,101,149,401,431,479,487,757,827,887,1061,1171,1409,
%T 1429,1543,1721,1789,1811,1889,1987,2099,2113,2137,2273,2689,2719,
%U 2857,3203,3571,3613,3623,3761,3853,3917,3929,4007,4217,4441,4943,5039,5209,5281,5449
%N Prime p concatenated with next 4 primes is also prime.
%H Michael S. Branicky, <a href="/A086040/b086040.txt">Table of n, a(n) for n = 1..10000</a>
%e a(1) = 7 because 7, 11, 13, 17 and 19 concatenated together yield 711131719, which is prime.
%o (Python)
%o from itertools import islice
%o from sympy import isprime, nextprime
%o def agen(): # generator of terms
%o plst = [2, 3, 5, 7, 11]
%o slst = list(map(str, plst))
%o while True:
%o if isprime(int("".join(slst))):
%o yield plst[0]
%o plst = plst[1:] + [nextprime(plst[-1])]
%o slst = slst[1:] + [str(plst[-1])]
%o print(list(islice(agen(), 50))) # _Michael S. Branicky_, Jan 26 2023
%Y Cf. A030459, A030468, A030472, A086041.
%K base,nonn
%O 1,1
%A Chuck Seggelin (barkeep(AT)plastereddragon.com), Jul 07 2003
%E Offset corrected by _Arkadiusz Wesolowski_, May 10 2012
%E a(15) and beyond from _Michael S. Branicky_, Jan 26 2023