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A107407
Numbers n such that 109*n - 107 is prime.
2
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.
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
KEYWORD
nonn,easy
AUTHOR
Parthasarathy Nambi, May 25 2005
STATUS
approved