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Primes congruent to 11 mod 25.
2

%I #14 Sep 08 2022 08:45:35

%S 11,61,211,311,461,661,761,811,911,1061,1361,1511,1811,1861,2011,2111,

%T 2161,2311,2411,2711,2861,3011,3061,3361,3461,3511,3761,3911,4111,

%U 4211,4261,4561,4861,5011,5261,5711,5861,6011,6211,6311,6361,6661,6761,6911,6961

%N Primes congruent to 11 mod 25.

%H Vincenzo Librandi, <a href="/A141935/b141935.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 20n log n. - _Charles R Greathouse IV_, Jul 02 2016

%t Select[Range[11, 20000, 25], PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Jun 15 2011 *)

%o (Magma) [p: p in PrimesUpTo(8000) | p mod 25 eq 11 ]; // _Vincenzo Librandi_, Aug 16 2012

%o (PARI) is(n)=isprime(n) && n%25==11 \\ _Charles R Greathouse IV_, Jul 02 2016

%Y Cf. A144562.

%K nonn,easy

%O 1,1

%A _N. J. A. Sloane_, Jul 11 2008