Strobogrammatic Numbers
A 'Strobogrammatic Number' is a kind of anagram (a 'visual pun', see 'Ambigram' in Wikipedia) in which a number appears the same when rotated 180 degrees. In other words, the numeral looks the same right-side up and upside down (e.g., 69, 96, 1001). A strobogrammatic prime is a strobogrammatic number that is also a prime number.
See "Strobogrammatic Number" in Wikipedia.
The Strobogrammatic Numbers Less than 1000
| Nth Number | Strobogrammatic Number | Prime? |
|---|