A107407 Numbers n such that 109*n - 107 is prime.

1, 6, 10, 12, 16, 30, 40, 54, 64, 70, 72, 82, 84, 94, 96, 106, 112, 120, 126, 132, 136, 160, 162, 166, 174, 184, 202, 204, 210, 220, 222, 226, 240, 244, 250, 252, 264, 274, 282, 292, 304, 306, 316, 330, 334, 342, 346, 352, 360, 364, 390, 394, 402, 420, 426, 436

Offset

1,2

Comments

107 and 109 are twin primes.

Links

Table of n, a(n) for n=1..56.

Chris Caldwell, The First 1,008 Twin Primes.

Example

If n=70, then 109*n - 107 = 7523 (prime).

Prog

(Magma) [n: n in [1..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: A075082 A101503 A102148 * A315125 A316991 A316992

Adjacent sequences: A107404 A107405 A107406 * A107408 A107409 A107410

Keyword

nonn,easy

Author

Parthasarathy Nambi, May 25 2005

Status

approved