A108969 Numbers n such that 43*n + 41 is prime.

0, 2, 12, 14, 42, 44, 60, 62, 66, 72, 86, 90, 104, 114, 132, 150, 152, 170, 174, 182, 186, 192, 200, 212, 222, 230, 234, 264, 276, 284, 290, 300, 312, 336, 342, 350, 354, 356, 362, 380, 384, 390, 402, 416, 432, 446, 450, 452, 464, 476, 480, 486, 494, 504, 506

Offset

1,2

Comments

41 and 43 are twin primes.

Links

Table of n, a(n) for n=1..55.

Example

If n=0 then 43*n + 41 = 41 (prime).
If n=90 then 43*n + 41 = 3911 (prime).

Mathematica

Select[Range[0, 510], PrimeQ[43#+41]&] (* Harvey P. Dale, Feb 27 2012 *)

Prog

(Magma) [n: n in [0..10000] |IsPrime(43*n + 41)] - Vincenzo Librandi, Nov 13 2010
(PARI) is(n)=isprime(43*n+41) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

Sequence in context: A270119 A340016 A260899 * A269130 A265485 A166745

Adjacent sequences: A108966 A108967 A108968 * A108970 A108971 A108972

Keyword

nonn,easy

Author

Parthasarathy Nambi, Jul 30 2005

Status

approved