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Revision History for A146542 (Underlined text is an addition; strikethrough text is a deletion.)

Showing entries 1-10 | older changes
A146542 Numbers m such that sigma(m) is a perfect number.
(history; published version)
#21 by Joerg Arndt at Mon May 23 03:57:44 EDT 2022
STATUS

reviewed

approved

#20 by Michel Marcus at Mon May 23 03:07:50 EDT 2022
STATUS

proposed

reviewed

#19 by Daniel Suteu at Mon May 23 02:46:01 EDT 2022
STATUS

editing

proposed

Discussion
Mon May 23 03:07 
Michel Marcus: yes for me thanks
#18 by Daniel Suteu at Mon May 23 02:44:20 EDT 2022
DATA

5, 12, 427, 10924032, 16125952, 22017387, 24376323, 32501857, 33288097, 3757637632, 6241076643, 8522760577, 45091651584, 66563866624, 86692869921, 137421905953, 137437511683, 727145809044307968, 1152771972099211264, 845044701535107443245558061611352064

COMMENTS

727145809044307968 and 1152771972099211264 are also terms. - Donovan Johnson, Jan 20 2012

EXTENSIONS

Two missing terms added and a(10)-a(1719) from Donovan Johnson, Jan 20 2012

a(20) from Daniel Suteu, May 23 2022

STATUS

reviewed

editing

Discussion
Mon May 23 02:45 
Daniel Suteu: Added. OK like this?
#17 by Michel Marcus at Mon May 23 00:51:12 EDT 2022
STATUS

proposed

reviewed

#16 by Daniel Suteu at Sun May 22 18:42:50 EDT 2022
STATUS

editing

proposed

Discussion
Mon May 23 00:51 
Michel Marcus: maybe add some more terms to data section ?
#15 by Daniel Suteu at Sun May 22 18:41:19 EDT 2022
LINKS

Daniel Suteu, <a href="/A146542/b146542.txt">Table of n, a(n) for n = 1..58</a>

CROSSREFS

Cf. A000396, A066961, A081357.

STATUS

approved

editing

#14 by Alois P. Heinz at Tue May 17 13:24:52 EDT 2022
STATUS

proposed

approved

#13 by Michel Marcus at Tue May 17 12:34:28 EDT 2022
STATUS

editing

proposed

#12 by Michel Marcus at Tue May 17 12:34:25 EDT 2022
NAME

Numbers nm such that sigma(nm) is a perfect number.

COMMENTS

727145809044307968 and 1152771972099211264 are also terms. - . - _Donovan Johnson, _, Jan 20 2012

STATUS

approved

editing

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Last modified August 2 12:08 EDT 2024. Contains 374842 sequences. (Running on oeis4.)