The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A101718

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A101718

Indices of primes in sequence defined by A(0) = 49, A(n) = 10*A(n-1) - 71 for n > 0.
(history; published version)

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

PROG

(MAGMAMagma) [n: n in [0..300] | IsPrime((370*10^n+71) div 9)]; // Vincenzo Librandi, Apr 15 2015

Discussion

Thu Sep 08

08:45

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

#21 by Charles R Greathouse IV at Thu Jan 17 13:44:06 EST 2019

LINKS

Makoto Kamada, <a href="httphttps://stdkmd.comnet/nrr/4/41119.htm#prime">Prime numbers of the form 411...119</a>.

Discussion

Thu Jan 17

13:44

OEIS Server: https://oeis.org/edit/global/2791

#20 by Ray Chandler at Fri Apr 24 12:47:23 EDT 2015

STATUS

editing

approved

#19 by Ray Chandler at Fri Apr 24 12:47:18 EDT 2015

COMMENTS

Numbers corresponding to terms <= 205 are certified primes.

STATUS

approved

editing

#18 by Ray Chandler at Fri Apr 24 12:43:49 EDT 2015

STATUS

editing

approved

#17 by Ray Chandler at Fri Apr 24 12:43:45 EDT 2015

LINKS

Makoto Kamada, <a href="http://stdkmd.com/nrr/4/41119.htm#prime">Factorizations of near-repdigit Prime numbers of the form 411...119</a>.

<a href="/index/Pri#Pri_rep">Index entries for primes involving repunits</a>.

STATUS

approved

editing

#16 by Bruno Berselli at Wed Apr 15 05:28:37 EDT 2015

STATUS

reviewed

approved

#15 by Michel Marcus at Wed Apr 15 01:59:16 EDT 2015

STATUS

proposed

reviewed

#14 by Vincenzo Librandi at Wed Apr 15 01:51:30 EDT 2015

STATUS

editing

proposed

#13 by Vincenzo Librandi at Wed Apr 15 01:51:19 EDT 2015

PROG

(MAGMA) [n: n in [0..300] | IsPrime((370*10^n+71) div 9)]; // Vincenzo Librandi, Apr 15 2015

STATUS

reviewed

editing