The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A199349 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A199349

Primes having only the (decimal) digits 3, 4 and 9.
(history; published version)

#21 by Harvey P. Dale at Tue May 02 16:22:46 EDT 2023

STATUS

editing

approved

#20 by Harvey P. Dale at Tue May 02 16:22:44 EDT 2023

MATHEMATICA

Select[Flatten[Table[FromDigits/@Tuples[{3, 4, 9}, n], {n, 5}]], PrimeQ] (* Harvey P. Dale, May 02 2023 *)

STATUS

approved

editing

#19 by Charles R Greathouse IV at Thu Sep 08 08:46:00 EDT 2022

PROG

(MAGMAMagma) [p: p in PrimesUpTo(2*10^5) | Set(Intseq(p)) subset [3, 4, 9]]; // Vincenzo Librandi, Jul 30 2015

Discussion

Thu Sep 08

08:46

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

#18 by Alois P. Heinz at Fri Aug 21 12:18:20 EDT 2015

STATUS

editing

approved

#17 by Alois P. Heinz at Fri Aug 21 12:18:17 EDT 2015

LINKS

Alois P. Heinz, <a href="/A199349/b199349.txt">Table of n, a(n) for n = 1..10000</a>

STATUS

approved

editing

#16 by Bruno Berselli at Thu Jul 30 03:43:26 EDT 2015

STATUS

reviewed

approved

#15 by Michel Marcus at Thu Jul 30 01:44:29 EDT 2015

STATUS

proposed

reviewed

#14 by Vincenzo Librandi at Thu Jul 30 00:35:34 EDT 2015

STATUS

editing

proposed

#13 by Vincenzo Librandi at Thu Jul 30 00:35:11 EDT 2015

COMMENTS

A020461 and A020466 are subsequences. - Vincenzo Librandi, Jul 30 2015

MATHEMATICA

Select[Prime[Range[2 10^4]], Complement[IntegerDigits[#], {3, 4, 9}]=={} &] (* Vincenzo Librandi, Jul 30 2015 *)

PROG

(MAGMA) [p: p in PrimesUpTo(2*10^5) | Set(Intseq(p)) subset [3, 4, 9]]; // Vincenzo Librandi, Jul 30 2015

STATUS

approved

editing

#12 by M. F. Hasler at Sun Jul 26 02:13:58 EDT 2015

STATUS

editing

approved