The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A057173

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

A057173

Numbers n such that (7^n + 1)/8 is a prime.
(history; published version)

#32 by Peter Luschny at Sun Jan 13 06:00:08 EST 2019

STATUS

reviewed

approved

#31 by Michael B. Porter at Sun Jan 13 04:01:53 EST 2019

STATUS

proposed

reviewed

#30 by Michel Marcus at Fri Jan 11 10:45:29 EST 2019

STATUS

editing

proposed

#29 by Michel Marcus at Fri Jan 11 10:45:25 EST 2019

LINKS

P. Bourdelais, <a href="https://listserv.nodak.edu/cgi-bin/wa.exe?A2=NMBRTHRY;417ab0d6.0906">A Generalized Repunit Conjecture</a>

STATUS

proposed

editing

#28 by Paul Bourdelais at Fri Jan 11 10:31:31 EST 2019

STATUS

editing

proposed

#27 by Paul Bourdelais at Fri Jan 11 10:31:02 EST 2019

DATA

3, 17, 23, 29, 47, 61, 1619, 18251, 106187, 201653, 1178033

LINKS

P. Bourdelais,<a href="https://listserv.nodak.edu/cgi-bin/wa.exe?A2=NMBRTHRY;417ab0d6.0906">A Generalized Repunit Conjecture</a>

EXTENSIONS

a(11)=1178033 corresponds to a probable prime discovered by Paul Bourdelais, Jan 11 2019

STATUS

approved

editing

#26 by Bruno Berselli at Mon Oct 30 04:31:43 EDT 2017

STATUS

proposed

approved

#25 by Michel Marcus at Mon Oct 30 04:10:36 EDT 2017

STATUS

editing

proposed

#24 by Michel Marcus at Mon Oct 30 04:10:30 EDT 2017

KEYWORD

nonn,more,changed

STATUS

proposed

editing

#23 by Michel Marcus at Mon Oct 30 04:07:30 EDT 2017

STATUS

editing

proposed