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Revision History for A020468

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Showing entries 1-10 | older changes

A020468

Primes that contain digits 5 and 9 only.
(history; published version)

#12 by Charles R Greathouse IV at Thu Sep 08 08:44:45 EDT 2022

PROG

(MAGMAMagma) [p: p in PrimesUpTo(95559559 ) | Set(Intseq(p)) subset [5, 9]]; // Vincenzo Librandi, Jul 27 2012

Discussion

Thu Sep 08

08:44

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

#11 by Jon E. Schoenfield at Sat Oct 20 11:13:05 EDT 2018

STATUS

editing

approved

#10 by Jon E. Schoenfield at Sat Oct 20 11:12:56 EDT 2018

PROG

(MAGMA) [p: p in PrimesUpTo(95559559 ) | Set(Intseq(p)) subset [5, 9]]; // _Vincenzo Librandi, _, Jul 27 2012.

STATUS

approved

editing

#9 by N. J. A. Sloane at Fri Jul 27 21:30:37 EDT 2012

STATUS

proposed

approved

#8 by Vincenzo Librandi at Fri Jul 27 13:11:27 EDT 2012

STATUS

editing

proposed

#7 by Vincenzo Librandi at Fri Jul 27 13:11:17 EDT 2012

LINKS

Vincenzo Librandi, <a href="/A020468/b020468.txt">Table of n, a(n) for n = 1..1000</a>

MATHEMATICA

Flatten[Table[Select[FromDigits/@Tuples[{5, 9}, n], PrimeQ], {n, 8}]] (* Vincenzo Librandi, Jul 27 2012 *)

PROG

(MAGMA) [p: p in PrimesUpTo(95559559 ) | Set(Intseq(p)) subset [5, 9]]; // Vincenzo Librandi, Jul 27 2012.

STATUS

approved

editing

#6 by Russ Cox at Fri Mar 30 18:35:14 EDT 2012

AUTHOR

_David W. Wilson (davidwwilson(AT)comcast.net)_

Discussion

Fri Mar 30

18:35

OEIS Server: https://oeis.org/edit/global/202

#5 by N. J. A. Sloane at Sat Sep 13 03:00:00 EDT 2003

KEYWORD

nonn,base,new

AUTHOR

David W. Wilson (davidwwilson(AT)attbicomcast.comnet)

#4 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

KEYWORD

nonn,base,new

AUTHOR

dww

David W. Wilson (davidwwilson(AT)attbi.com)

#3 by N. J. A. Sloane at Mon May 08 03:00:00 EDT 2000

KEYWORD

nonn,base,new

AUTHOR

wilson@ctron.com

dww