|
Search: id:A103063
|
|
|
| A103063 |
|
Numbers n such that 7*10^n + 6*R_n - 5 is prime, where R_n = 11...1 is the repunit (A002275) of length n. |
|
+0
2
|
|
| 1, 2, 6, 25, 69, 253, 300, 384, 434, 721, 822, 883, 2192, 2649, 3441, 3445, 8028
(list; graph; listen)
|
|
|
Search completed in 0.002 seconds
|
