it is a shape with a 8 sided shape
The smallest non-palindromic number whose square is palindromic is 77. When squared, (77^2 = 5929), which is indeed a palindromic number. The next smallest non-palindromic number, 88, also yields a palindromic square, (88^2 = 7744), but 77 is the smallest such number.
11
676=262
That would be 26 . . . its square is 676.There are two smaller palindromic squares . . . 121 and 484 ... but they're the squares of11 and 22 respectively, which are palindromic, so they flunk the question's specifications.
11
112 = 121
26^2 = 676
1661 is a palindromic number.
You call it a palindromic sentence. If it isn't a sentence it is a palindromic phrase or palindromic sequence.
There are not just 13 non-palindromic numbers. Most numbers are non-palindromic.
A palindromic number reads the same forwards and backwards. The number 437 is not palindromic, as it reads as 734 when reversed. A palindromic version of 437 could be 434 or 444.
"Palindromic" is the adjective form of "palindrome."