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A142821 Primes congruent to 23 mod 61. 2
23, 389, 877, 1487, 1609, 2341, 2707, 4049, 4903, 5147, 5879, 6367, 6733, 6977, 8563, 8807, 8929, 9173, 9539, 9661, 10271, 11003, 11369, 11491, 12101, 12589, 13687, 13931, 14419, 15761, 16127, 16249, 16493, 16981, 17713, 17957, 19421, 19543, 20641, 21617 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

FORMULA

a(n) ~ 60n log n. - Charles R Greathouse IV, Jul 03 2016

MATHEMATICA

Select[Prime[Range[2700]], MemberQ[{23}, Mod[#, 61]] &] (* Vincenzo Librandi, Sep 05 2012 *)

Select[Range[23, 22000, 61], PrimeQ] (* Harvey P. Dale, Jun 17 2018 *)

PROG

(MAGMA) [p: p in PrimesUpTo(22000) | p mod 61 eq 23 ] ; // Vincenzo Librandi, Sep 05 2012

(PARI) is(n)=isprime(n) && n%61==23 \\ Charles R Greathouse IV, Jul 03 2016

CROSSREFS

Cf. A000040.

Sequence in context: A046493 A014926 A016267 * A245805 A016197 A199821

Adjacent sequences:  A142818 A142819 A142820 * A142822 A142823 A142824

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Jul 11 2008

STATUS

approved

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Last modified September 28 02:36 EDT 2020. Contains 337392 sequences. (Running on oeis4.)