A120345 Numbers n such that 2357*n + 1 is prime.

6, 14, 24, 26, 38, 50, 90, 104, 108, 110, 126, 164, 174, 176, 180, 188, 206, 230, 234, 236, 264, 266, 296, 306, 314, 320, 344, 350, 386, 390, 404, 408, 440, 470, 476, 488, 498, 516, 518, 534, 548, 570, 608, 618, 630, 636, 638, 680, 684, 698, 708, 716, 720

Offset

1,1

Links

Table of n, a(n) for n=1..53.

Example

If n=110 then 2357*n + 1 = 259271 (prime).

Mathematica

Select[Range[1000], PrimeQ[2357*# + 1] &] (* Stefan Steinerberger, Jul 22 2006 *)

Prog

(Magma) [ n: n in [0..1500] | IsPrime(2357*n + 1) ] // Vincenzo Librandi, Jan 31 2011
(PARI) is(n)=isprime(2357*n+1) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

Sequence in context: A084583 A022824 A005281 * A107400 A374987 A104675

Adjacent sequences: A120342 A120343 A120344 * A120346 A120347 A120348

Keyword

nonn,less,easy

Author

Parthasarathy Nambi, Jun 24 2006

Extensions

More terms from Stefan Steinerberger, Jul 22 2006

Status

approved