cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-10 of 12 results. Next

A126893 Numbers k such that k^6 + 82991 is prime.

Original entry on oeis.org

7980, 8526, 11676, 18774, 26754, 31584, 34314, 34650, 43134, 51576, 64176, 65184, 65730, 65856, 70224, 71190, 71316, 76650, 78834, 79506, 81564, 84294, 91266, 92904, 96096, 96894, 105294, 110376, 111090, 113484, 117684, 118146, 118566
Offset: 1

Views

Author

Artur Jasinski, Dec 31 2006

Keywords

References

  • Ribenboim P., 1996. The Little Book of Big Primes. Springer Verlag.

Crossrefs

Programs

  • Magma
    [n: n in [0..200] | IsPrime(n^6+82991)] // Vincenzo Librandi, Nov 23 2010
    
  • Mathematica
    a = {}; Do[If[PrimeQ[x^6 + 82991], AppendTo[a, x]], {x, 7978, 40000}]; a
    Select[ Range@119000, PrimeQ[#^6 + 82991] &] (* Robert G. Wilson v, Jan 21 2018 *)
  • PARI
    is(n)=isprime(n^6+82991) \\ Charles R Greathouse IV, Feb 17 2017

A126894 Numbers k such that k^12 + 4094 is prime.

Original entry on oeis.org

170625, 181545, 233415, 490035, 492765, 552825, 591045, 642915, 885885, 921375, 1262625, 1358175, 1481025, 1743105, 1748565, 1901445, 2029755, 2062515, 2073435, 2119845, 2193555, 2302755, 2532075, 2761395, 2764125, 2772315
Offset: 1

Views

Author

Artur Jasinski, Dec 31 2006

Keywords

References

  • Ribenboim P., 1996. The Little Book of Big Primes. Springer Verlag.

Crossrefs

Programs

  • Magma
    [n: n in [0..4000] | IsPrime(n^12+4094)] // Vincenzo Librandi, Nov 23 2010
    
  • Mathematica
    Select[Range[1000000], PrimeQ[#^12 + 4094] &]
  • PARI
    is(n)=isprime(n^12+4094) \\ Charles R Greathouse IV, Feb 20 2017

Extensions

More terms from Vincenzo Librandi, Mar 26 2010

A161998 Numbers n such that n^6 + 272 is prime.

Original entry on oeis.org

2163, 2541, 2667, 4011, 5187, 5733, 5985, 7119, 7371, 7707, 8547, 10017, 10731, 12579, 13041, 13125, 13293, 14007, 14679, 15855, 16317, 16401, 16863, 17283, 19131, 19383, 20139, 20475, 21021, 21357, 22197, 22995, 23457, 23667, 24591, 25053, 25389, 25641
Offset: 1

Views

Author

Arkadiusz Wesolowski, Jun 24 2009

Keywords

Crossrefs

Programs

A119276 Values of n such that n^6 + 29450922301244534 is prime.

Original entry on oeis.org

63693, 64785, 70455, 90993, 100107, 104475, 110103, 110817, 117957, 122325, 125055, 134127, 140343, 167685, 183183, 228585, 242235, 242445, 247527, 252735, 256095, 262983, 264243, 281463, 293685, 298053, 308133, 310485, 314475, 320565
Offset: 1

Views

Author

Eric W. Weisstein, May 12 2006

Keywords

Crossrefs

Programs

  • Mathematica
    Select[Range[350000],PrimeQ[#^6+29450922301244534]&] (* Harvey P. Dale, Mar 12 2016 *)

A126895 Numbers n such that (1365n)^12+4094 is prime.

Original entry on oeis.org

125, 133, 171, 359, 361, 405, 433, 471, 649, 675, 925, 995, 1085, 1277, 1281, 1393, 1487, 1511, 1519, 1553, 1607, 1687, 1855, 2023, 2025, 2031, 2207, 2259, 2387, 2495, 2673, 2749, 2851, 2957, 3057, 3067, 3251, 3271, 3277, 3355, 3401, 3599, 3701, 3763
Offset: 1

Views

Author

Artur Jasinski, Dec 31 2006

Keywords

Comments

A126894(n)/1365

References

  • Ribenboim P., 1996. The Little Book of Big Primes. Springer Verlag.

Crossrefs

Programs

A122131 Numbers n such that n^12 + 488669 is prime.

Original entry on oeis.org

616980, 764400, 933660, 1051050, 1730820, 1758120, 2467920, 3093090, 3164070, 3461640, 3696420, 3890250, 3923010, 3950310, 4051320, 4075890, 4196010, 4286100, 4324320, 4337970, 4389840, 4556370, 4561830, 4720170, 4793880
Offset: 1

Views

Author

Eric W. Weisstein, Aug 21 2006

Keywords

Comments

When n is odd the polynomial produces even values, so it is trivially composite. When n ends in 2, 4, 6, or 8 then n^12 ends in 6, so the polynomial produces values ending in 5, again composite. Hence all the values in this sequence are divisible by 10. - Dmitry Kamenetsky, Nov 08 2016
By Fermat's Little Theorem the polynomial is divisible by 2, 3, 5, 7 and 13 when n is not divisible by these primes. Hence all the values in the sequence are divisible by the product of these primes, 2730. - Chun Lok Yiu, Mar 14 2022

References

  • Paulo Ribenboim, The Little Book of Big Primes, Springer Verlag, 1996.

Crossrefs

Programs

  • Magma
    [n: n in [0..10^7] | IsPrime(n^12+488669)]; // Vincenzo Librandi, May 03 2014
    
  • Mathematica
    a = {}; Do[If[PrimeQ[x^12 + 488669], AppendTo[a, x]], {x, 616979, 10000000}]; a (* Artur Jasinski, Dec 31 2006 *)
    Select[Range[10^7], PrimeQ[#^12 + 488669] &] (* Vincenzo Librandi, May 03 2014 *)
  • PARI
    is(n)=isprime(n^12+488669) \\ Charles R Greathouse IV, Jun 06 2017

Extensions

Edited by N. J. A. Sloane, May 07 2007

A163592 Numbers n such that n^6 + 545 is prime.

Original entry on oeis.org

84, 1302, 10584, 11382, 12012, 12558, 13356, 15498, 19362, 20286, 20496, 22092, 23142, 23772, 25452, 26418, 26502, 26544, 28644, 29274, 29778, 31374, 31962, 35406, 36876, 37338, 39522, 40152, 40488, 41286, 42924, 43428, 45108, 46116, 47754, 47796, 48678
Offset: 1

Views

Author

Arkadiusz Wesolowski, Aug 01 2009

Keywords

Crossrefs

Programs

A126897 Numbers n such that (2730n)^12+488669 is prime.

Original entry on oeis.org

226, 280, 342, 385, 634, 644, 904, 1133, 1159, 1268, 1354, 1425, 1437, 1447, 1484, 1493, 1537, 1570, 1584, 1589, 1608, 1669, 1671, 1729, 1756, 1779, 2221, 2399, 2424, 2462, 2501, 2544, 2829, 2831, 2871, 2938, 2944, 3037, 3070, 3184, 3208, 3254, 3256
Offset: 1

Views

Author

Artur Jasinski, Dec 31 2006

Keywords

Comments

A122131(n)/2730

References

  • Ribenboim P., 1996. The Little Book of Big Primes. Springer Verlag.

Crossrefs

Programs

A155809 Numbers k such that 64*k^6 + 1091 is prime.

Original entry on oeis.org

0, 1953, 2310, 2583, 2688, 2730, 4095, 6510, 6993, 7245, 8967, 9870, 9975, 10332, 11613, 12327, 14868, 15057, 15603, 16758, 16800, 17052, 17157, 20160, 20643, 22008, 22533, 23058, 23877, 24150, 29925, 31122, 31710, 32655, 33432, 34020
Offset: 1

Views

Author

Zak Seidov, Jan 28 2009

Keywords

Crossrefs

Cf. A066386 (Numbers n such that n^6+1091 is prime).

Programs

  • Magma
    [n: n in [0..500] | IsPrime(64*n^6+1091)] // Vincenzo Librandi, Nov 26 2010
  • Mathematica
    c = 0; A2 = Reap[Do[If[PrimeQ[64 n^6 + 1091],c++;Print[{c, n}];Sow[n]]; If[c ==1000, Break[]],{n, 0, 10^7}]][[2, 1]]

Formula

a(n) = A066386(n)/2.

Extensions

Offset changed to 1 by Georg Fischer, Sep 27 2022

A181113 Numbers n such that n^6 + 1091 is semiprime.

Original entry on oeis.org

84, 210, 252, 364, 546, 756, 786, 980, 1176, 1380, 1386, 1484, 1614, 1620, 1680, 1722, 1770, 2130, 2478, 2520, 2940, 3114, 3174, 3294, 3330, 3374, 3486, 3516, 3900, 4074, 4158, 4296, 4340, 4410, 4524, 4764, 4920, 4956, 5670, 5844, 6006, 6024, 6066, 6258
Offset: 1

Views

Author

Jason Earls, Oct 04 2010

Keywords

Crossrefs

Cf. A066386.

Programs

  • Mathematica
    Select[Range[7300],PrimeOmega[#^6+1091]==2&] (* Harvey P. Dale, Jun 12 2012 *)
Showing 1-10 of 12 results. Next