Timeline for Solutions of $rad(\sigma(m))=2rad(m)$
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 27, 2014 at 22:01 | comment | added | Gerry Myerson | The sequence has now been entered into the online encyclopedia, oeis.org/A238330, with a link back here. | |
| Feb 27, 2014 at 18:30 | comment | added | Sylvain JULIEN | And if it ever turns out that there are finitely many solutions, this will entail that there are finitely many OPNs. | |
| Feb 27, 2014 at 18:27 | comment | added | Sylvain JULIEN | I don't really expect it to be true. It would just be interesting to know whether there are finitely many solutions or not, so one has to pick up one of both possibilities. | |
| Feb 27, 2014 at 18:16 | comment | added | Stefan Kohl♦ | @SylvainJULIEN: Why would you expect this to be true? -- By the way, the further solutions $n < 1000000$ are 891, 200655, 307125, 544635. | |
| Feb 27, 2014 at 18:11 | comment | added | Sylvain JULIEN | Thanks! Can it be proven that there are only finitely many solutions? | |
| Feb 27, 2014 at 18:10 | vote | accept | Sylvain JULIEN | ||
| Feb 27, 2014 at 18:07 | history | answered | Stefan Kohl♦ | CC BY-SA 3.0 |