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A141944 Primes congruent to 22 mod 25. 3

%I #16 Sep 08 2022 08:45:35

%S 47,97,197,347,397,547,647,797,947,997,1097,1297,1447,1597,1697,1747,

%T 1847,1997,2297,2347,2447,2647,2797,2897,3347,3547,3697,3797,3847,

%U 3947,4297,4397,4447,4547,4597,5147,5197,5297,5347,5647,5897,6047,6197,6247,6397

%N Primes congruent to 22 mod 25.

%H Vincenzo Librandi, <a href="/A141944/b141944.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[22, 20000, 25], PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Jun 15 2011 *)

%o (Magma) [p: p in PrimesUpTo(8000) | p mod 25 eq 22 ]; // _Vincenzo Librandi_, Aug 16 2012

%o (PARI) is(n)=isprime(n) && n%25==22 \\ _Charles R Greathouse IV_, Jul 02 2016

%Y Cf. A000040.

%K nonn,easy

%O 1,1

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

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Last modified April 26 19:27 EDT 2024. Contains 372004 sequences. (Running on oeis4.)