Timeline for Is there a fixed integer $x>1$ satisfing ${\sigma}^{k}(x)\equiv 0\pmod{x}$ for all positive integers $k$?
Current License: CC BY-SA 3.0
30 events
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| Apr 13, 2017 at 12:19 | history | edited | CommunityBot |
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| S Aug 5, 2015 at 0:48 | history | bounty ended | CommunityBot | ||
| S Aug 5, 2015 at 0:48 | history | notice removed | CommunityBot | ||
| S Jul 27, 2015 at 23:40 | history | bounty started | salimmath15 | ||
| S Jul 27, 2015 at 23:40 | history | notice added | salimmath15 | Improve details | |
| S Jul 25, 2015 at 0:33 | history | bounty ended | CommunityBot | ||
| S Jul 25, 2015 at 0:33 | history | notice removed | CommunityBot | ||
| Jul 23, 2015 at 23:53 | vote | accept | zeraoulia rafik | ||
| Jul 23, 2015 at 14:31 | vote | accept | zeraoulia rafik | ||
| Jul 23, 2015 at 23:53 | |||||
| Jul 21, 2015 at 21:53 | answer | added | Gerhard Paseman | timeline score: 1 | |
| Jul 20, 2015 at 1:59 | comment | added | zeraoulia rafik | @Ricardo Andrade, do you have any counter example for the above question ? | |
| Jul 20, 2015 at 0:38 | comment | added | zeraoulia rafik | @Ricardo Andrade, thank you for your edition to the question | |
| Jul 20, 2015 at 0:25 | history | edited | Ricardo Andrade |
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| S Jul 16, 2015 at 23:14 | history | bounty started | zeraoulia rafik | ||
| S Jul 16, 2015 at 23:14 | history | notice added | zeraoulia rafik | Draw attention | |
| Jul 15, 2015 at 22:59 | history | edited | GH from MO | CC BY-SA 3.0 |
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| Jul 15, 2015 at 22:50 | review | First posts | |||
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| Jul 15, 2015 at 16:14 | history | edited | zeraoulia rafik | CC BY-SA 3.0 |
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| Jul 15, 2015 at 1:16 | answer | added | Gerhard Paseman | timeline score: 2 | |
| Jul 15, 2015 at 0:09 | comment | added | zeraoulia rafik | @GHfromMO, I think should be for x to be perfect number for all k and this is very hard | |
| Jul 14, 2015 at 23:56 | history | edited | GH from MO | CC BY-SA 3.0 |
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| Jul 14, 2015 at 23:49 | comment | added | GH from MO | I suspect that such an $x$ does not exist, but proving it will be very hard. | |
| Jul 14, 2015 at 23:47 | history | edited | GH from MO | CC BY-SA 3.0 |
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| Jul 14, 2015 at 23:45 | history | edited | GH from MO | CC BY-SA 3.0 |
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| Jul 14, 2015 at 23:45 | history | edited | zeraoulia rafik | CC BY-SA 3.0 |
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| Jul 14, 2015 at 23:39 | history | edited | zeraoulia rafik | CC BY-SA 3.0 |
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| Jul 14, 2015 at 23:32 | comment | added | Gerhard Paseman | There are also multiperfect numbers. I suspect there is a proof that metaperfect numbers (infinitely iterated form of multiperfects) do not exist. Gerhard "Likes Using The Term 'Metaperfect'" Paseman, 2015.07.14 | |
| Jul 14, 2015 at 23:31 | history | edited | zeraoulia rafik | CC BY-SA 3.0 |
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| Jul 14, 2015 at 23:21 | history | edited | zeraoulia rafik |
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| Jul 14, 2015 at 23:12 | history | asked | zeraoulia rafik | CC BY-SA 3.0 |