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A141927
Primes congruent to 1 mod 25.
3
101, 151, 251, 401, 601, 701, 751, 1051, 1151, 1201, 1301, 1451, 1601, 1801, 1901, 1951, 2251, 2351, 2551, 2801, 2851, 3001, 3251, 3301, 3701, 3851, 4001, 4051, 4201, 4451, 4651, 4751, 4801, 4951, 5051, 5101, 5351, 5501, 5651, 5701, 5801, 5851, 6101, 6151
OFFSET
1,1
LINKS
FORMULA
a(n) ~ 20n log n. - Charles R Greathouse IV, Jul 02 2016
MATHEMATICA
Select[Prime[Range[900]], MemberQ[{1}, Mod[#, 25]] &] (* Vincenzo Librandi, Aug 16 2012 *)
Select[Range[1, 6200, 25], PrimeQ] (* Harvey P. Dale, Oct 02 2016 *)
PROG
(Magma) [p: p in PrimesUpTo(8000) | p mod 25 eq 1 ]; // Vincenzo Librandi, Aug 16 2012
(PARI) is(n)=isprime(n) && n%25==1 \\ Charles R Greathouse IV, Jul 02 2016
CROSSREFS
Cf. A000040.
Sequence in context: A050806 A243890 A129563 * A243365 A107186 A142660
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved