The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A178329 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A178329

Numbers n such that reversal(n^n) is prime.
(history; published version)

#20 by Joerg Arndt at Mon Aug 17 11:00:55 EDT 2020

STATUS

proposed

approved

#19 by Michel Marcus at Mon Aug 17 10:20:28 EDT 2020

STATUS

editing

proposed

#18 by Michel Marcus at Mon Aug 17 10:20:24 EDT 2020

COMMENTS

a(3) > 26580. - _Giovanni Resta, _, Mar 01 2013

LINKS

Carlos Rivera, <a href="http://www.primepuzzles.net/puzzles/puzz_653.htm">Puzzle 653</a>, published in (Aug./Sep.?) 2012, answers added between March and October 2013; The Prime Puzzles and Problems Connection.

CROSSREFS

CFCf. A004086.

KEYWORD

nonn,base,bref,hard,more,nonn,bref

EXTENSIONS

a(3) = 34351 from Thomas Ritschel (2013), added by Arkadiusz Wesolowski, Oct 30 2014

STATUS

approved

editing

#17 by M. F. Hasler at Fri Oct 31 12:01:06 EDT 2014

STATUS

proposed

approved

#16 by Jon E. Schoenfield at Fri Oct 31 11:57:56 EDT 2014

STATUS

editing

proposed

#15 by Jon E. Schoenfield at Fri Oct 31 11:57:51 EDT 2014

COMMENTS

The numbers corresponding to the second and third term terms are probable primes.

#14 by M. F. Hasler at Fri Oct 31 11:56:25 EDT 2014

COMMENTS

a(3) > 26580. - Giovanni Resta, Mar 01 2013

a(4) > 43200 according to Thomas Ritschel (2013). - M. F. Hasler, Oct 31 2014

LINKS

Carlos Rivera, <a href="http://www.primepuzzles.net/puzzles/puzz_653.htm">Puzzle 653</a>, published in (Aug./Sep.?) 2012, answers added between April March and October 2013.

STATUS

proposed

editing

Discussion

Fri Oct 31

11:59

M. F. Hasler: I restore Resta's comment about a(3) from March 2013. It documents the history of progress / search results. Unless records are huge and overcharged (which is not the case here), such comments should not be deleted.

#13 by M. F. Hasler at Fri Oct 31 11:53:17 EDT 2014

STATUS

editing

proposed

#12 by M. F. Hasler at Fri Oct 31 11:50:57 EDT 2014

COMMENTS

The number numbers corresponding to the second and third term is a are probable primeprimes.

a(4) > 43200 according to Thomas Ritschel. - M. F. Hasler, Oct 31 2014

LINKS

Carlos Rivera, <a href="http://www.primepuzzles.net/puzzles/puzz_653.htm">Puzzle 653</a>, published in (Aug./Sep.?) 2012, answers added between April and October 2013.

EXTENSIONS

a(3) = 34351 from Thomas Ritschel, (2013), added by Arkadiusz Wesolowski, Oct 30 2014

STATUS

approved

editing

Discussion

Fri Oct 31

11:53

M. F. Hasler: according to http://web.archive.org/http://www.primepuzzles.net/puzzles/puzz_653.htm and https://oeis.org/history/view?seq=A178329&v=3

#11 by Alois P. Heinz at Thu Oct 30 15:13:05 EDT 2014

STATUS

proposed

approved