A108028 Numbers k such that 139*k + 137 is prime.

0, 6, 8, 14, 20, 38, 54, 66, 78, 80, 84, 90, 98, 104, 108, 110, 128, 138, 140, 146, 156, 170, 194, 204, 206, 210, 216, 236, 258, 260, 264, 276, 288, 296, 314, 320, 338, 350, 360, 380, 386, 390, 426, 428, 440, 446, 450, 456, 458, 464, 476

Offset

1,2

Comments

137 and 139 are twin primes.

Links

Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

Chris Caldwell, The First 1,008 Twin Primes.

Example

If k=84 then 139*k+ 137 = 11813 (prime).

Mathematica

Select[Range[0, 500], PrimeQ[139*# + 137] &] (* Stefan Steinerberger, Mar 03 2006 *)

Prog

(PARI) is(n)=isprime(139*n+137) \\ Charles R Greathouse IV, Jun 06 2017

Crossrefs

Sequence in context: A315914 A315915 A315916 * A160244 A315917 A315918

Adjacent sequences: A108025 A108026 A108027 * A108029 A108030 A108031

Keyword

nonn,easy

Author

Parthasarathy Nambi, May 31 2005

Extensions

More terms from Stefan Steinerberger, Mar 03 2006

Status

approved