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A107302 Numbers k such that 99991*k + 10007 is prime. 2

%I #21 Sep 08 2022 08:45:18

%S 0,20,24,42,44,62,72,96,104,122,152,156,180,192,200,222,230,240,242,

%T 252,254,264,294,312,356,362,380,422,426,452,482,500,504,534,546,566,

%U 590,602,650,656,672,690,710,720,726,744,770,794,804,810,836,840,864,914

%N Numbers k such that 99991*k + 10007 is prime.

%C 10007 and 99991 are the smallest and largest five-digit primes.

%H Daniel Starodubtsev, <a href="/A107302/b107302.txt">Table of n, a(n) for n = 1..10000</a>

%e If k=0, then 99991*k + 10007 = 10007 (prime).

%e If k=122, then 99991*k + 10007 = 12208909 (prime).

%o (Magma) [n: n in [0..1000] | IsPrime(99991*n+10007)]; // _Vincenzo Librandi_, Nov 13 2010

%o (PARI) is(n)=isprime(99991*n+10007) \\ _Charles R Greathouse IV_, Jun 13 2017

%Y Cf. A107301.

%K nonn,easy

%O 1,2

%A _Parthasarathy Nambi_, May 20 2005

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Last modified March 28 22:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)