The number 23

Its correspondent in each prime base is prime except 19, where it is 77, a palindrome.
In base 3 it is a palindrome (212) so it remains 23.

Base 23  Reverse Is 
2 10111 11101 29
3 212 212 23
5 43 34 19
7 32 23 17
11 21 12 13
13 1A A1 131
17 16 61 103
19 14 41 77

 

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