The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A109376 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A109376

Numbers k such that k * (sum of the digits of k raised to their own power) + 1 is prime and sets a new record for number of digits.
(history; published version)

#10 by Alois P. Heinz at Thu May 02 09:54:38 EDT 2024

STATUS

reviewed

approved

#9 by Joerg Arndt at Thu May 02 09:51:57 EDT 2024

STATUS

proposed

reviewed

#8 by Michael S. Branicky at Thu May 02 05:10:30 EDT 2024

STATUS

editing

proposed

#7 by Michael S. Branicky at Thu May 02 05:09:42 EDT 2024

NAME

Numbers n k such that n k * (sum of the digits of n k raised to their own power) + 1 is prime and sets a new record for number of digits.

DATA

1, 11, 20, 33, 35, 36, 75, 79, 390, 1991, 9199, 91899, 699949, 5299999, 39999999, 428999999, 3699949999

EXTENSIONS

a(16)-a(17) from Michael S. Branicky, May 02 2024

STATUS

approved

editing

#6 by N. J. A. Sloane at Fri Dec 15 17:36:53 EST 2017

AUTHOR

_Jason Earls (zevi_35711(AT)yahoo.com), _, Aug 25 2005

Discussion

Fri Dec 15

17:36

OEIS Server: https://oeis.org/edit/global/2722

#5 by Joerg Arndt at Thu Sep 12 02:47:55 EDT 2013

STATUS

proposed

approved

#4 by Owen Whitby at Wed Sep 11 21:27:14 EDT 2013

STATUS

editing

proposed

#3 by Owen Whitby at Wed Sep 11 21:24:59 EDT 2013

DATA

1, 11, 20, 33, 35, 36, 75, 79, 390, 1991, 9199, 91899, 699949, 5299999, 39999999

EXTENSIONS

a(15) from Owen Whitby, Sep 11 2013

STATUS

approved

editing

#2 by N. J. A. Sloane at Fri Jan 09 03:00:00 EST 2009

KEYWORD

base,more,nonn,new

AUTHOR

Jason Earls (jcearlszevi_35711(AT)cableoneyahoo.netcom), Aug 25 2005

#1 by N. J. A. Sloane at Wed Sep 21 03:00:00 EDT 2005

NAME

Numbers n such that n * (sum of the digits of n raised to their own power) + 1 is prime and sets a new record for number of digits.

DATA

1, 11, 20, 33, 35, 36, 75, 79, 390, 1991, 9199, 91899, 699949, 5299999

OFFSET

1,2

CROSSREFS

Cf. A109372.

KEYWORD

base,more,nonn

AUTHOR

Jason Earls (jcearls(AT)cableone.net), Aug 25 2005

STATUS

approved