The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A077786 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A077786

Numbers k such that (10^k - 1) - 4*10^floor(k/2) is a palindromic wing prime (a.k.a. near-repdigit palindromic prime).
(history; published version)

#32 by Alois P. Heinz at Thu Mar 26 06:47:00 EDT 2020

STATUS

proposed

approved

#31 by Michel Marcus at Thu Mar 26 06:15:19 EDT 2020

STATUS

editing

proposed

#30 by Michel Marcus at Thu Mar 26 06:15:16 EDT 2020

EXAMPLE

a(n)=177 -> is a term because (10^177 - 1) - 4*10^88 = 99...99599...99.

STATUS

approved

editing

#29 by Charles R Greathouse IV at Thu Jan 17 13:44:05 EST 2019

LINKS

Makoto Kamada, <a href="httphttps://stdkmd.comnet/nrr/9/99599.htm#prime">Prime numbers of the form 99...99599...99</a>

Discussion

Thu Jan 17

13:44

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

#28 by Alois P. Heinz at Sat Nov 03 20:54:41 EDT 2018

STATUS

proposed

approved

#27 by Jon E. Schoenfield at Sat Nov 03 20:22:13 EDT 2018

STATUS

editing

proposed

#26 by Jon E. Schoenfield at Sat Nov 03 20:22:11 EDT 2018

NAME

Numbers k such that (10^k - 1) - 4*10^floor(k/2) is a palindromic wing prime (a.k.a. near-repdigit palindromepalindromic prime).

STATUS

approved

editing

#25 by Joerg Arndt at Wed Oct 31 02:23:44 EDT 2018

STATUS

reviewed

approved

#24 by Michel Marcus at Wed Oct 31 02:01:56 EDT 2018

STATUS

proposed

reviewed

#23 by Jon E. Schoenfield at Wed Oct 31 01:08:49 EDT 2018

STATUS

editing

proposed