A142029 -id:A142029 - cp's OEIS frontend

A142031 Primes congruent to 27 mod 31.

89, 151, 337, 461, 523, 647, 709, 1019, 1453, 1949, 2011, 2383, 2693, 2879, 3251, 3313, 3499, 3623, 4057, 4243, 4801, 4987, 5297, 5483, 5669, 6599, 6661, 6971, 7219, 7529, 7591, 7901, 7963, 8087, 8273, 8521, 8707, 8831, 8893, 9203, 10009, 10133, 10567, 10691

Offset: 1

N. J. A. Sloane, Jul 11 2008

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

Cf. A000040, A142005, A142006, A142029.

[p: p in PrimesUpTo(12000) | p mod 31 eq 27 ]; // Vincenzo Librandi, Aug 18 2012

Select[Range[27,20000,31],PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Apr 30 2011 *)

is(n)=isprime(n) && n%31==27 \\ Charles R Greathouse IV, Jul 02 2016

a(n) ~ 30n log n. - Charles R Greathouse IV, Jul 02 2016

A142030 Primes congruent to 26 mod 31.

Original entry on oeis.org

181, 367, 491, 677, 739, 863, 1049, 1297, 1483, 1607, 1669, 1979, 2351, 2909, 2971, 3343, 3467, 3529, 4211, 4273, 4397, 4583, 4831, 6133, 6257, 6691, 7001, 7187, 7559, 7621, 7993, 8117, 8179, 8737, 8861, 8923, 9109, 9419, 9791, 10039, 10163, 10597, 11093, 11279

Offset: 1

N. J. A. Sloane, Jul 11 2008

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

Cf. A000040, A142005, A142006, A142029.

[p: p in PrimesUpTo(12000) | p mod 31 eq 26 ]; // Vincenzo Librandi, Aug 18 2012

Select[Range[26,20000,31],PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Apr 30 2011 *)
Select[Prime[Range[2000]],Mod[#,31]==26&] (* Harvey P. Dale, Nov 21 2024 *)

is(n)=isprime(n) && n%31==26 \\ Charles R Greathouse IV, Jul 03 2016

a(n) ~ 30n log n. - Charles R Greathouse IV, Jul 03 2016

cp's OEIS Frontend

A142031 Primes congruent to 27 mod 31.

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