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Revision History for A046381

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Showing entries 1-10 | older changes

A046381

Palindromes with exactly 7 palindromic prime factors (counted with multiplicity).
(history; published version)

#11 by Joerg Arndt at Fri Nov 06 04:08:42 EST 2015

STATUS

proposed

approved

#10 by Michel Marcus at Fri Nov 06 03:07:56 EST 2015

STATUS

editing

proposed

#9 by Michel Marcus at Fri Nov 06 03:07:52 EST 2015

AUTHOR

Patrick De Geest, Jun 15 1998.

STATUS

proposed

editing

#8 by Lars Blomberg at Fri Nov 06 02:36:22 EST 2015

STATUS

editing

proposed

#7 by Lars Blomberg at Fri Nov 06 02:25:44 EST 2015

KEYWORD

nonn,more,base,changed

#6 by Lars Blomberg at Fri Nov 06 02:19:04 EST 2015

DATA

82728, 279972, 657756, 29077092, 85688658, 89288298, 561363165, 579828975, 582636285, 819828918, 2209559022, 5154334515, 5637337365, 6824774286, 8904664098, 19585758591, 42372027324, 62663836626, 70151815107, 167985589761, 4650120210564, 6552226222556

LINKS

Lars Blomberg, <a href="/A046381/b046381.txt">Table of n, a(n) for n = 1..39</a>, terms < 10^16.

EXAMPLE

The palindrome 7051034301507 is a term since it has 7 factors 3^2 7 101^2 313 35053, all palindromic.

EXTENSIONS

More terms from Lars Blomberg, Nov 06 2015

STATUS

approved

editing

#5 by Charles R Greathouse IV at Fri Aug 24 10:48:00 EDT 2012

AUTHOR

_Patrick De Geest (pdg(AT)worldofnumbers.com), _, Jun 15 1998.

Discussion

Fri Aug 24

10:48

OEIS Server: https://oeis.org/edit/global/1824

#4 by N. J. A. Sloane at Fri Feb 27 03:00:00 EST 2009

OFFSET

0,1,1

KEYWORD

nonn,more,base,new

#3 by N. J. A. Sloane at Sat Jun 12 03:00:00 EDT 2004

KEYWORD

nonn,more,newbase

#2 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

KEYWORD

nonn,more,new

AUTHOR

Patrick De Geest (Patrick.DeGeest@pingpdg(AT)worldofnumbers.becom), June Jun 15 1998.