2 (the 1st prime)

 
Next prime3
Previous primenothing
The only even prime 
Octal(2)8
Hexadecimal(2)16
Prime gap1
1st Factorial prime1! + 1
1st Double factorial prime1!! + 1 , 3!! - 1
1st Sophie Germain prime 
1st Left-truncatable prime 
1st Right-truncatable prime 
1st Two-sided prime