Timeline for Are there infinitely many $n$ such that $n!-1$ and $n!+1$ are prime numbers?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Aug 16, 2021 at 16:21 | comment | added | JoshuaZ | @მამუკაჯიბლაძე I would suspect that for any fixed k, the set of $n$ where $n!^2 -1$ has $k$ prime factors is finite. A similar heuristic to the above will agree. | |
| Aug 16, 2021 at 16:11 | comment | added | მამუკა ჯიბლაძე | @StefanKohl You got me :) | |
| Aug 16, 2021 at 15:51 | comment | added | Stefan Kohl♦ | @მამუკაჯიბლაძე Do you know such $n$ which is greater than 38? | |
| Aug 16, 2021 at 13:45 | comment | added | მამუკა ჯიბლაძე | It seems not very rare that $n!^2-1$ is a product of three primes. | |
| Aug 16, 2021 at 13:20 | history | edited | JoshuaZ | CC BY-SA 4.0 |
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| Aug 16, 2021 at 13:12 | history | answered | JoshuaZ | CC BY-SA 4.0 |