The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A137390 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A137390

Numbers k for which (9 + k!)/9 is prime.
(history; published version)

#48 by Bruno Berselli at Mon Feb 24 04:22:57 EST 2020

STATUS

reviewed

approved

#47 by Joerg Arndt at Mon Feb 24 04:21:40 EST 2020

STATUS

proposed

reviewed

#46 by Michel Marcus at Mon Feb 17 02:29:09 EST 2020

STATUS

editing

proposed

#45 by Michel Marcus at Mon Feb 17 02:29:03 EST 2020

EXTENSIONS

3562 a(11) from Dimitris Zygiridis (dmzyg70(AT)gmail.com), Jul 25 2008

11819 and 26737 a(12)-a(13) from Robert Price, Feb 10 2012

STATUS

proposed

editing

#44 by Jon E. Schoenfield at Sat Feb 08 10:55:48 EST 2020

STATUS

editing

proposed

#43 by Jon E. Schoenfield at Sat Feb 08 10:55:45 EST 2020

COMMENTS

The next number in the sequence, if one exists , is greater than 10944. - Robert Price, Mar 16 2010

STATUS

proposed

editing

#42 by Jinyuan Wang at Fri Feb 07 02:58:46 EST 2020

STATUS

editing

proposed

#41 by Jinyuan Wang at Fri Feb 07 02:58:11 EST 2020

CROSSREFS

Cf. nk!/m - 1 is a prime: A002982, A082671, A139056, A139199-A139205.

Cf. n(m + k!)/m + 1 is a prime: A002981, A082672, A089085, A139061, A139058, A139063, A139065, A151913, A139071.

STATUS

proposed

editing

Discussion

Fri Feb 07

02:58

Jinyuan Wang: well, for me both of them are okay

#40 by Jinyuan Wang at Thu Feb 06 19:25:02 EST 2020

STATUS

editing

proposed

Discussion

Thu Feb 06

20:52

Jianing Song: I see. So you have to change "n!/m +- 1" in the crossref to "(m + k!)/m too.

#39 by Jinyuan Wang at Thu Feb 06 19:24:57 EST 2020

COMMENTS

No other n k exists, for n k <= 6000. - Dimitris Zygiridis (dmzyg70(AT)gmail.com), Jul 25 2008

There are no other terms for n k < 26738. - Robert Price, Feb 10 2012

STATUS

reviewed

editing