A142011 Primes congruent to 7 mod 31.

7, 131, 193, 317, 379, 503, 751, 937, 1061, 1123, 1433, 1619, 1867, 2053, 2239, 2549, 2797, 3169, 3541, 3727, 3851, 4099, 4409, 4657, 4967, 5153, 5711, 5897, 6269, 6703, 6827, 7013, 7757, 8191, 8377, 8501, 8563, 9059, 9431, 9679, 9803, 10733, 11353, 12097

Offset

1,1

Links

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

Formula

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

Mathematica

Select[Range[7, 20000, 31], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Apr 20 2011 *)

Prog

(Magma) [ p: p in PrimesUpTo(30000) | p mod 31 eq 7 ]; // Vincenzo Librandi, Apr 20 2011
(PARI) is(n)=isprime(n) && n%31==7 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040, A142005, A142006.

Sequence in context: A332050 A134056 A123036 * A074224 A158701 A201308

Adjacent sequences: A142008 A142009 A142010 * A142012 A142013 A142014

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved