A107405 Numbers n such that 109*n + 107 is prime.

0, 6, 18, 20, 44, 50, 56, 78, 98, 104, 110, 120, 126, 134, 138, 144, 170, 174, 180, 188, 204, 218, 240, 246, 254, 258, 260, 266, 270, 284, 296, 306, 308, 324, 348, 354, 386, 396, 408, 410, 414, 420, 450, 456, 464, 476, 488, 510, 518, 524, 534, 540, 546, 554

Offset

1,2

Comments

107 and 109 are twin primes.

Links

Table of n, a(n) for n=1..54.

Chris Caldwell, The First 1,008 Twin Primes.

Example

If n=104, then 109*n + 107 = 11443 (prime).

Mathematica

Select[Range[0, 600], PrimeQ[109#+107 ]&] (* Harvey P. Dale, Oct 06 2017 *)

Prog

(Magma) [n: n in [0..100000] | IsPrime(109*n + 107)] // Vincenzo Librandi, Nov 13 2010
(PARI) is(n)=isprime(109*n+107) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

Sequence in context: A108762 A088724 A124276 * A372438 A077663 A025163

Adjacent sequences: A107402 A107403 A107404 * A107406 A107407 A107408

Keyword

nonn,easy

Author

Parthasarathy Nambi, May 25 2005

Status

approved