43 (the 14th prime)

 
Next prime47
Previous prime41
Octal(53)8
Hexadecimal(2B)16
Prime gap4
6th Cousin prime (the small number)The big number is 47 .
6th Prime of the Form 3n+142 + 3 * 32
7th Prime of the Form 4n+3 
2nd Euler prime number 
9th Left-truncatable prime