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A167445 Prime numbers ending in the prime number 61. 2

%I #9 Sep 08 2022 08:45:48

%S 61,461,661,761,1061,1361,1861,2161,2861,3061,3361,3461,3761,4261,

%T 4561,4861,5261,5861,6361,6661,6761,6961,7561,8161,8461,8761,8861,

%U 9161,9461,9661,10061,10861,11161,11261,12161,14461,14561,15061,15161,15361,15461

%N Prime numbers ending in the prime number 61.

%H Vincenzo Librandi, <a href="/A167445/b167445.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[5, 6000]], Take[IntegerDigits[#], -2]=={6, 1} &] (* _Vincenzo Librandi_, Jul 07 2014 *)

%o (Magma) [n: n in PrimesUpTo(16000) | n mod 100 eq 61]; // _Vincenzo Librandi_, Jul 07 2014

%o (PARI) select(x->(x % 100)==61, primes(2000)) \\ _Michel Marcus_, Jul 07 2014

%Y Cf. similar sequence listed in A244763.

%K base,nonn

%O 1,1

%A _Mark A. Thomas_, Nov 03 2009

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Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)