The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A102166

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A102166

Numbers n such that 2*n^2 + 11*n + 101 is prime.
(history; published version)

#18 by Charles R Greathouse IV at Thu Sep 08 08:45:16 EDT 2022

PROG

(MAGMAMagma) [n: n in [0..1000] | IsPrime(2*n^2 + 11*n + 101)] // Vincenzo Librandi, Nov 18 2010

Discussion

Thu Sep 08

08:45

OEIS Server: https://oeis.org/edit/global/2944

#17 by Harvey P. Dale at Sun Aug 16 11:57:11 EDT 2020

STATUS

editing

approved

#16 by Harvey P. Dale at Sun Aug 16 11:57:08 EDT 2020

LINKS

Harvey P. Dale, <a href="/A102166/b102166.txt">Table of n, a(n) for n = 1..1000</a>

STATUS

approved

editing

#15 by Harvey P. Dale at Sun Aug 16 11:55:37 EDT 2020

STATUS

editing

approved

#14 by Harvey P. Dale at Sun Aug 16 11:55:34 EDT 2020

MATHEMATICA

Select[Range[0, 400], PrimeQ[2#^2+11#+101]&] (* Harvey P. Dale, Aug 16 2020 *)

STATUS

approved

editing

#13 by Joerg Arndt at Mon Feb 19 10:13:22 EST 2018

STATUS

proposed

approved

#12 by Jon E. Schoenfield at Mon Feb 19 09:46:23 EST 2018

STATUS

editing

proposed

#11 by Jon E. Schoenfield at Mon Feb 19 09:46:20 EST 2018

EXAMPLE

If For n=0, then 2*n^2 + 11*n + 101 = 2*0^2 + 11*0 + 101 = 101 (prime)

If for n=48, then 2*n^2 + 11*n + 101 = 2*48^2 + 11*48 + 101 = 5237 (prime)

If for n=92, then 2*n^2 + 11*n + 101 = 2*92^2 + 11*92 + 101 = 18041 (prime)

PROG

(MAGMA) [n: n in [0..1000] | IsPrime(2*n^2 + 11*n + 101)] [From V. // _Vincenzo Librandi, _, Nov 18 2010]

STATUS

approved

editing

#10 by Charles R Greathouse IV at Tue Jun 13 12:21:31 EDT 2017

STATUS

editing

approved

#9 by Charles R Greathouse IV at Tue Jun 13 12:21:28 EDT 2017

PROG

(PARI) is(n)=isprime(2*n^2+11*n+101) \\ Charles R Greathouse IV, Jun 13 2017

KEYWORD

nonn,easy

STATUS

approved

editing