A106699 Numbers k such that 1009*k - 9973 is prime.

14, 24, 30, 48, 74, 78, 86, 108, 116, 128, 146, 168, 176, 188, 200, 204, 216, 234, 240, 248, 266, 294, 300, 308, 314, 318, 330, 350, 380, 386, 396, 410, 420, 468, 470, 480, 494, 510, 524, 534, 536, 554, 576, 584, 590, 596, 620, 630, 636, 648, 650, 666, 680

Offset: 1

Author

Parthasarathy Nambi, May 13 2005

Keywords

• nonn
• easy

Comments

1009 and 9973 are the smallest and largest of four-digit primes.

Examples

			If k=14, then 1009*k - 9973 = 4153 (prime).
If k=128, then 1009*k - 9973 = 119179 (prime).
		

Crossrefs

Cf. A105680, A105710.

Programs

Magma

[n: n in [10..100000] | IsPrime(1009*n - 9973)]; // Vincenzo Librandi, Nov 13 2010

PARI

is(n)=isprime(1009*n-9973) \\ Charles R Greathouse IV, Jun 13 2017