A107369 Numbers n such that 103*n + 101 is prime.

0, 2, 6, 14, 20, 30, 56, 66, 72, 74, 84, 90, 102, 116, 132, 134, 146, 150, 162, 164, 176, 186, 206, 212, 216, 224, 234, 240, 246, 254, 260, 282, 312, 314, 326, 332, 342, 344, 350, 354, 360, 366, 380, 402, 410, 414, 444, 450, 482, 486, 492, 510, 512, 534, 540

Offset

1,2

Comments

101 and 103 are twin primes.

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Chris Caldwell, The First 1,008 Twin Primes.

Example

If n=0, then 103*n + 101 = 101 (prime).
If n=74, then 103*n + 101 = 7723 (prime).

Maple

a:=proc(n) if isprime(103*n+101)=true then n else fi end: seq(a(n), n=0..700); # Emeric Deutsch

Mathematica

Select[Range[0, 600], PrimeQ[103#+101]&] (* Harvey P. Dale, Mar 14 2015 *)

Prog

(PARI) is(n)=isprime(103*n+101) \\ Charles R Greathouse IV, Jun 12 2017

Crossrefs

Sequence in context: A067664 A130800 A067262 * A151731 A009779 A086666

Adjacent sequences: A107366 A107367 A107368 * A107370 A107371 A107372

Keyword

nonn,easy

Author

Parthasarathy Nambi, May 24 2005

Extensions

More terms from Emeric Deutsch, Jun 13 2005

Status

approved