Dihedral primes up to 642744
Dihedral primes: Primes that remain prime when read upside down or mirrored in a seven-segment display.
There is 22 dihedral primes smaller than 642744.
List#
2, 5, 11, 101, 181, 1181, 1811, 18181, 108881, 110881, 118081, 120121, 121021, 121151, 150151, 151051, 151121, 180181, 180811, 181081, 188011, 188801
Table#
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 - 10 | 2 | 5 | 11 | 101 | 181 | 1181 | 1811 | 18181 | 108881 | 110881 |
| 11 - 20 | 118081 | 120121 | 121021 | 121151 | 150151 | 151051 | 151121 | 180181 | 180811 | 181081 |
| 21 - 30 | 188011 | 188801 |
Related#
- Learn more about Dihedral primes.
- All dihedral primes